feat(order): add RepairOrder order type (backend)

Introduce a customer-facing RepairOrder, closely mirroring the existing
ReturnOrder: models, serializers, DRF API endpoints, permissions, status
codes, system settings, admin and API tests. Backend only; stock
allocation/consumption is intentionally left for a follow-up.

Refs #12064

src/backend/InvenTree/InvenTree/api.py

@@ -757,6 +757,7 @@ class APISearchView(GenericAPIView):
             'partcategory': part.api.CategoryList,
             'purchaseorder': order.api.PurchaseOrderList,
             'returnorder': order.api.ReturnOrderList,
+            'repairorder': order.api.RepairOrderList,
             'salesorder': order.api.SalesOrderList,
             'salesordershipment': order.api.SalesOrderShipmentList,
             'stockitem': stock.api.StockList,

src/backend/InvenTree/InvenTree/api_version.py

@@ -1,11 +1,15 @@
 """InvenTree API version information."""
 
 # InvenTree API version
-INVENTREE_API_VERSION = 515
+INVENTREE_API_VERSION = 516
 """Increment this API version number whenever there is a significant change to the API that any clients need to know about."""
 
 INVENTREE_API_TEXT = """
 
+v516 -> 2026-07-05 : https://github.com/inventree/InvenTree/pull/XXXXX
+    - Adds RepairOrder model and API endpoints
+    - Adds RepairOrderStatus status codes
+
 v515 -> 2026-07-03 : https://github.com/inventree/InvenTree/pull/12298
     - Change the file fields definition to binary (from uri) in the upload requests
 

src/backend/InvenTree/common/setting/system.py

@@ -889,6 +889,28 @@ SYSTEM_SETTINGS: dict[str, InvenTreeSettingsKeyType] = {
         'default': False,
         'validator': bool,
     },
+    'REPAIRORDER_REFERENCE_PATTERN': {
+        'name': _('Repair Order Reference Pattern'),
+        'description': _(
+            'Required pattern for generating Repair Order reference field'
+        ),
+        'default': 'RP-{ref:04d}',
+        'validator': order.validators.validate_repair_order_reference_pattern,
+    },
+    'REPAIRORDER_REQUIRE_RESPONSIBLE': {
+        'name': _('Require Responsible Owner'),
+        'description': _('A responsible owner must be assigned to each order'),
+        'default': False,
+        'validator': bool,
+    },
+    'REPAIRORDER_EDIT_COMPLETED_ORDERS': {
+        'name': _('Edit Completed Repair Orders'),
+        'description': _(
+            'Allow editing of repair orders after they have been completed'
+        ),
+        'default': False,
+        'validator': bool,
+    },
     'SALESORDER_REFERENCE_PATTERN': {
         'name': _('Sales Order Reference Pattern'),
         'description': _('Required pattern for generating Sales Order reference field'),

src/backend/InvenTree/order/admin.py

@@ -172,6 +172,33 @@ class ReturnOrdeerExtraLineAdmin(GeneralExtraLineAdmin, admin.ModelAdmin):
     """Admin class for the ReturnOrderExtraLine model."""
 
 
+@admin.register(models.RepairOrder)
+class RepairOrderAdmin(admin.ModelAdmin):
+    """Admin class for the RepairOrder model."""
+
+    exclude = ['reference_int']
+
+    list_display = ['reference', 'customer', 'status']
+
+    search_fields = ['reference', 'customer__name', 'description']
+
+    autocomplete_fields = ['customer', 'project_code', 'contact', 'address']
+
+
+@admin.register(models.RepairOrderLineItem)
+class RepairOrderLineItemAdmin(admin.ModelAdmin):
+    """Admin class for RepairOrderLine model."""
+
+    list_display = ['order', 'item', 'reference']
+
+    autocomplete_fields = ['item', 'order']
+
+
+@admin.register(models.RepairOrderExtraLine)
+class RepairOrderExtraLineAdmin(GeneralExtraLineAdmin, admin.ModelAdmin):
+    """Admin class for the RepairOrderExtraLine model."""
+
+
 class TransferOrderLineItemInlineAdmin(admin.StackedInline):
     """Inline admin class for the TransferOrderLineItem model."""
 

src/backend/InvenTree/order/api.py

@@ -54,6 +54,7 @@ from order import models, serializers
 from order.status_codes import (
     PurchaseOrderStatus,
     PurchaseOrderStatusGroups,
+    RepairOrderStatus,
     ReturnOrderLineStatus,
     ReturnOrderStatus,
     SalesOrderStatus,
@@ -1824,6 +1825,274 @@ class ReturnOrderExtraLineDetail(RetrieveUpdateDestroyAPI):
     serializer_class = serializers.ReturnOrderExtraLineSerializer
 
 
+class RepairOrderFilter(OrderFilter):
+    """Custom API filters for the RepairOrderList endpoint."""
+
+    class Meta:
+        """Metaclass options."""
+
+        model = models.RepairOrder
+        fields = ['customer']
+
+    include_variants = rest_filters.BooleanFilter(
+        label=_('Include Variants'), method='filter_include_variants'
+    )
+
+    def filter_include_variants(self, queryset, name, value):
+        """Filter by whether or not to include variants of the selected part.
+
+        Note:
+        - This filter does nothing by itself, and requires the 'part' filter to be set.
+        - Refer to the 'filter_part' method for more information.
+        """
+        return queryset
+
+    part = rest_filters.ModelChoiceFilter(
+        queryset=Part.objects.all(), field_name='part', method='filter_part'
+    )
+
+    @extend_schema_field(OpenApiTypes.INT)
+    def filter_part(self, queryset, name, part):
+        """Filter by selected 'part'.
+
+        Note:
+        - If 'include_variants' is set to True, then all variants of the selected part will be included.
+        - Otherwise, just filter by the selected part.
+        """
+        include_variants = str2bool(self.data.get('include_variants', False))
+
+        if include_variants:
+            parts = part.get_descendants(include_self=True)
+        else:
+            parts = Part.objects.filter(pk=part.pk)
+
+        # Now that we have a queryset of parts, find all the matching repair orders
+        line_items = models.RepairOrderLineItem.objects.filter(item__part__in=parts)
+
+        # Generate a list of ID values for the matching repair orders
+        repair_orders = line_items.values_list('order', flat=True).distinct()
+
+        # Now we have a list of matching IDs, filter the queryset
+        return queryset.filter(pk__in=repair_orders)
+
+    completed_before = InvenTreeDateFilter(
+        label=_('Completed Before'), field_name='complete_date', lookup_expr='lt'
+    )
+
+    completed_after = InvenTreeDateFilter(
+        label=_('Completed After'), field_name='complete_date', lookup_expr='gt'
+    )
+
+
+class RepairOrderMixin(SerializerContextMixin):
+    """Mixin class for RepairOrder endpoints."""
+
+    queryset = models.RepairOrder.objects.all()
+    serializer_class = serializers.RepairOrderSerializer
+
+    def get_queryset(self, *args, **kwargs):
+        """Return annotated queryset for this endpoint."""
+        queryset = super().get_queryset(*args, **kwargs)
+        queryset = serializers.RepairOrderSerializer.annotate_queryset(queryset)
+        queryset = queryset.prefetch_related(
+            'contact', 'created_by', 'customer', 'responsible'
+        )
+
+        return queryset
+
+
+class RepairOrderOutputOptions(OutputConfiguration):
+    """Output options for the RepairOrder endpoint."""
+
+    OPTIONS = [InvenTreeOutputOption(flag='customer_detail')]
+
+
+class RepairOrderList(
+    RepairOrderMixin,
+    OrderCreateMixin,
+    DataExportViewMixin,
+    OutputOptionsMixin,
+    ParameterListMixin,
+    ListCreateAPI,
+):
+    """API endpoint for accessing a list of RepairOrder objects."""
+
+    filterset_class = RepairOrderFilter
+    filter_backends = SEARCH_ORDER_FILTER
+
+    output_options = RepairOrderOutputOptions
+
+    ordering_field_aliases = {
+        'reference': ['reference_int', 'reference'],
+        'project_code': ['project_code__code'],
+    }
+
+    ordering_fields = [
+        'creation_date',
+        'created_by',
+        'reference',
+        'customer__name',
+        'customer_reference',
+        'line_items',
+        'status',
+        'start_date',
+        'target_date',
+        'complete_date',
+        'project_code',
+        'updated_at',
+    ]
+
+    search_fields = [
+        'customer__name',
+        'reference',
+        'description',
+        'customer_reference',
+        'project_code__code',
+    ]
+
+    ordering = '-reference'
+
+
+class RepairOrderDetail(RepairOrderMixin, OutputOptionsMixin, RetrieveUpdateDestroyAPI):
+    """API endpoint for detail view of a single RepairOrder object."""
+
+    output_options = RepairOrderOutputOptions
+
+
+class RepairOrderContextMixin:
+    """Simple mixin class to add a RepairOrder to the serializer context."""
+
+    queryset = models.RepairOrder.objects.all()
+
+    def get_serializer_context(self):
+        """Add the RepairOrder object to the serializer context."""
+        context = super().get_serializer_context()
+
+        # Pass the RepairOrder instance through to the serializer for validation
+        try:
+            context['order'] = models.RepairOrder.objects.get(
+                pk=self.kwargs.get('pk', None)
+            )
+        except Exception:
+            pass
+
+        context['request'] = self.request
+
+        return context
+
+
+class RepairOrderCancel(RepairOrderContextMixin, CreateAPI):
+    """API endpoint to cancel a RepairOrder."""
+
+    serializer_class = serializers.RepairOrderCancelSerializer
+
+
+class RepairOrderHold(RepairOrderContextMixin, CreateAPI):
+    """API endpoint to hold a RepairOrder."""
+
+    serializer_class = serializers.RepairOrderHoldSerializer
+
+
+class RepairOrderComplete(RepairOrderContextMixin, CreateAPI):
+    """API endpoint to complete a RepairOrder."""
+
+    serializer_class = serializers.RepairOrderCompleteSerializer
+
+
+class RepairOrderIssue(RepairOrderContextMixin, CreateAPI):
+    """API endpoint to issue (place) a RepairOrder."""
+
+    serializer_class = serializers.RepairOrderIssueSerializer
+
+
+class RepairOrderLineItemFilter(LineItemFilter):
+    """Custom filters for the RepairOrderLineItemList endpoint."""
+
+    class Meta:
+        """Metaclass options."""
+
+        price_field = 'price'
+        model = models.RepairOrderLineItem
+        fields = ['order', 'item']
+
+    outcome = rest_filters.NumberFilter(label='outcome')
+
+
+class RepairOrderLineItemMixin(SerializerContextMixin):
+    """Mixin class for RepairOrderLineItem endpoints."""
+
+    queryset = models.RepairOrderLineItem.objects.all()
+    serializer_class = serializers.RepairOrderLineItemSerializer
+
+    def get_queryset(self, *args, **kwargs):
+        """Return annotated queryset for this endpoint."""
+        queryset = super().get_queryset(*args, **kwargs)
+
+        queryset = queryset.prefetch_related('order', 'item', 'item__part')
+
+        return queryset
+
+
+class RepairOrderLineItemOutputOptions(OutputConfiguration):
+    """Output options for the RepairOrderLineItem endpoint."""
+
+    OPTIONS = [
+        InvenTreeOutputOption('part_detail'),
+        InvenTreeOutputOption('item_detail', default=True),
+        InvenTreeOutputOption('order_detail'),
+    ]
+
+
+class RepairOrderLineItemList(
+    RepairOrderLineItemMixin, DataExportViewMixin, OutputOptionsMixin, ListCreateAPI
+):
+    """API endpoint for accessing a list of RepairOrderLineItem objects."""
+
+    filterset_class = RepairOrderLineItemFilter
+
+    filter_backends = SEARCH_ORDER_FILTER
+
+    output_options = RepairOrderLineItemOutputOptions
+
+    ordering_fields = ['part', 'IPN', 'stock', 'reference', 'target_date', 'line']
+
+    ordering_field_aliases = {
+        'line': ['line_int', 'line', 'item__part__name'],
+        'part': 'item__part__name',
+        'IPN': 'item__part__IPN',
+        'stock': ['item__quantity', 'item__serial_int', 'item__serial'],
+    }
+
+    search_fields = [
+        'item__serial',
+        'item__part__name',
+        'item__part__description',
+        'reference',
+    ]
+
+
+class RepairOrderLineItemDetail(
+    RepairOrderLineItemMixin, OutputOptionsMixin, RetrieveUpdateDestroyAPI
+):
+    """API endpoint for detail view of a RepairOrderLineItem object."""
+
+    output_options = RepairOrderLineItemOutputOptions
+
+
+class RepairOrderExtraLineList(GeneralExtraLineList, OutputOptionsMixin, ListCreateAPI):
+    """API endpoint for accessing a list of RepairOrderExtraLine objects."""
+
+    queryset = models.RepairOrderExtraLine.objects.all()
+    serializer_class = serializers.RepairOrderExtraLineSerializer
+
+
+class RepairOrderExtraLineDetail(RetrieveUpdateDestroyAPI):
+    """API endpoint for detail view of a RepairOrderExtraLine object."""
+
+    queryset = models.RepairOrderExtraLine.objects.all()
+    serializer_class = serializers.RepairOrderExtraLineSerializer
+
+
 class TransferOrderFilter(OrderFilter):
     """Custom API filters for the TransferOrderList endpoint."""
 
@@ -2417,6 +2686,8 @@ class OrderCalendarExport(ICalFeed):
             ordertype_title = _('Sales Order')
         elif obj['ordertype'] == 'return-order':
             ordertype_title = _('Return Order')
+        elif obj['ordertype'] == 'repair-order':
+            ordertype_title = _('Repair Order')
         elif obj['ordertype'] == 'transfer-order':
             ordertype_title = _('Transfer Order')
         else:
@@ -2464,6 +2735,15 @@ class OrderCalendarExport(ICalFeed):
                 ).filter(status__lt=ReturnOrderStatus.COMPLETE.value)
             else:
                 outlist = models.ReturnOrder.objects.filter(target_date__isnull=False)
+        elif obj['ordertype'] == 'repair-order':
+            if obj['include_completed'] is False:
+                # Do not include completed orders from list in this case
+                # Complete status = 30
+                outlist = models.RepairOrder.objects.filter(
+                    target_date__isnull=False
+                ).filter(status__lt=RepairOrderStatus.COMPLETE.value)
+            else:
+                outlist = models.RepairOrder.objects.filter(target_date__isnull=False)
         elif obj['ordertype'] == 'transfer-order':
             if obj['include_completed'] is False:
                 # Do not include completed orders from list in this case
@@ -2810,6 +3090,91 @@ order_api_urls = [
             ),
         ]),
     ),
+    # API endpoints for repair orders
+    path(
+        'repair-order/',
+        include([
+            # Repair Order detail endpoints
+            path(
+                '<int:pk>/',
+                include([
+                    path(
+                        'cancel/',
+                        RepairOrderCancel.as_view(),
+                        name='api-repair-order-cancel',
+                    ),
+                    path(
+                        'hold/', RepairOrderHold.as_view(), name='api-repair-order-hold'
+                    ),
+                    path(
+                        'complete/',
+                        RepairOrderComplete.as_view(),
+                        name='api-repair-order-complete',
+                    ),
+                    path(
+                        'issue/',
+                        RepairOrderIssue.as_view(),
+                        name='api-repair-order-issue',
+                    ),
+                    meta_path(models.RepairOrder),
+                    path(
+                        '', RepairOrderDetail.as_view(), name='api-repair-order-detail'
+                    ),
+                ]),
+            ),
+            # Repair order status code information
+            path(
+                'status/',
+                StatusView.as_view(),
+                {StatusView.MODEL_REF: RepairOrderStatus},
+                name='api-repair-order-status-codes',
+            ),
+            # Repair Order list
+            path('', RepairOrderList.as_view(), name='api-repair-order-list'),
+        ]),
+    ),
+    # API endpoints for repair order lines
+    path(
+        'repair-order-line/',
+        include([
+            path(
+                '<int:pk>/',
+                include([
+                    meta_path(models.RepairOrderLineItem),
+                    path(
+                        '',
+                        RepairOrderLineItemDetail.as_view(),
+                        name='api-repair-order-line-detail',
+                    ),
+                ]),
+            ),
+            path(
+                '', RepairOrderLineItemList.as_view(), name='api-repair-order-line-list'
+            ),
+        ]),
+    ),
+    # API endpoints for repair order extra line
+    path(
+        'repair-order-extra-line/',
+        include([
+            path(
+                '<int:pk>/',
+                include([
+                    meta_path(models.RepairOrderExtraLine),
+                    path(
+                        '',
+                        RepairOrderExtraLineDetail.as_view(),
+                        name='api-repair-order-extra-line-detail',
+                    ),
+                ]),
+            ),
+            path(
+                '',
+                RepairOrderExtraLineList.as_view(),
+                name='api-repair-order-extra-line-list',
+            ),
+        ]),
+    ),
     # API endpoints for transfer orders
     path(
         'transfer-order/',
@@ -2900,7 +3265,7 @@ order_api_urls = [
     ),
     # API endpoint for subscribing to ICS calendar of purchase/sales/return orders
     re_path(
-        r'^calendar/(?P<ordertype>purchase-order|sales-order|return-order|transfer-order)/calendar.ics',
+        r'^calendar/(?P<ordertype>purchase-order|sales-order|return-order|repair-order|transfer-order)/calendar.ics',
         OrderCalendarExport(),
         name='api-po-so-calendar',
     ),

src/backend/InvenTree/order/events.py

@@ -39,6 +39,15 @@ class ReturnOrderEvents(BaseEventEnum):
     HOLD = 'returnorder.hold'
 
 
+class RepairOrderEvents(BaseEventEnum):
+    """Event enumeration for the Repair models."""
+
+    ISSUED = 'repairorder.issued'
+    COMPLETED = 'repairorder.completed'
+    CANCELLED = 'repairorder.cancelled'
+    HOLD = 'repairorder.hold'
+
+
 class TransferOrderEvents(BaseEventEnum):
     """Event enumeration for the PurchaseOrder models."""
 

src/backend/InvenTree/order/fixtures/repair_order.yaml

@@ -0,0 +1,69 @@
+- model: order.repairorder
+  pk: 1
+  fields:
+    reference: 'RP-001'
+    reference_int: 1
+    description: 'Repair for a customer'
+    customer: 4
+    status: 10  # Pending
+
+- model: order.repairorder
+  pk: 2
+  fields:
+    reference: 'RP-002'
+    reference_int: 2
+    description: 'Repair for a customer'
+    customer: 4
+    status: 20  # In Progress
+
+- model: order.repairorder
+  pk: 3
+  fields:
+    reference: 'RP-003'
+    reference_int: 3
+    description: 'Repair for a customer'
+    customer: 4
+    status: 30  # Complete
+
+- model: order.repairorder
+  pk: 4
+  fields:
+    reference: 'RP-004'
+    reference_int: 4
+    description: 'Repair for a customer'
+    customer: 5
+    status: 40  # Cancelled
+
+- model: order.repairorder
+  pk: 5
+  fields:
+    reference: 'RP-005'
+    reference_int: 5
+    description: 'Repair for a customer'
+    customer: 5
+    status: 20  # In progress
+
+- model: order.repairorder
+  pk: 6
+  fields:
+    reference: 'RP-006'
+    reference_int: 6
+    description: 'Repair for a customer'
+    customer: 5
+    status: 10  # Pending
+
+# 1 x R_4K7_0603
+- model: order.repairorderlineitem
+  pk: 1
+  fields:
+    order: 6
+    item: 1008
+    quantity: 1
+
+# An extra line item
+- model: order.repairorderextraline
+  pk: 1
+  fields:
+    order: 6
+    reference: 'Freight cost'
+    quantity: 1

src/backend/InvenTree/order/migrations/0121_repairorder.py

@@ -0,0 +1,121 @@
+# Generated by Django 5.2.15 on 2026-07-05 07:34
+
+import InvenTree.fields
+import InvenTree.models
+import InvenTree.validators
+import django.core.validators
+import django.db.models.deletion
+import djmoney.models.fields
+import djmoney.models.validators
+import generic.states.fields
+import generic.states.states
+import generic.states.transition
+import generic.states.validators
+import order.status_codes
+import order.validators
+import taggit.managers
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('common', '0046_alter_emailmessage_global_id_and_more'),
+        ('company', '0080_company_tags'),
+        ('order', '0120_purchaseorder_tags_returnorder_tags_salesorder_tags_and_more'),
+        ('stock', '0123_remove_stockitem_review_needed'),
+        ('taggit', '0006_rename_taggeditem_content_type_object_id_taggit_tagg_content_8fc721_idx'),
+        ('users', '0015_alter_userprofile_type'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='RepairOrder',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('metadata', models.JSONField(blank=True, help_text='JSON metadata field, for use by external plugins', null=True, verbose_name='Plugin Metadata')),
+                ('reference_int', models.BigIntegerField(default=0)),
+                ('notes', InvenTree.fields.InvenTreeNotesField(blank=True, help_text='Markdown notes (optional)', max_length=50000, null=True, verbose_name='Notes')),
+                ('barcode_data', models.CharField(blank=True, help_text='Third party barcode data', max_length=500, verbose_name='Barcode Data')),
+                ('barcode_hash', models.CharField(blank=True, help_text='Unique hash of barcode data', max_length=128, verbose_name='Barcode Hash')),
+                ('total_price_currency', djmoney.models.fields.CurrencyField(choices=[], default='', editable=False, max_length=3, null=True)),
+                ('total_price', InvenTree.fields.InvenTreeModelMoneyField(blank=True, currency_choices=[], decimal_places=6, default_currency='', help_text='Total price for this order', max_digits=19, null=True, validators=[djmoney.models.validators.MinMoneyValidator(0)], verbose_name='Total Price')),
+                ('order_currency', models.CharField(blank=True, help_text='Currency for this order (leave blank to use company default)', max_length=3, null=True, validators=[InvenTree.validators.validate_currency_code], verbose_name='Order Currency')),
+                ('description', models.CharField(blank=True, help_text='Order description (optional)', max_length=250, verbose_name='Description')),
+                ('link', InvenTree.fields.InvenTreeURLField(blank=True, help_text='Link to external page', max_length=2000, verbose_name='Link')),
+                ('start_date', models.DateField(blank=True, help_text='Scheduled start date for this order', null=True, verbose_name='Start date')),
+                ('target_date', models.DateField(blank=True, help_text='Expected date for order delivery. Order will be overdue after this date.', null=True, verbose_name='Target Date')),
+                ('creation_date', models.DateField(blank=True, null=True, verbose_name='Creation Date')),
+                ('issue_date', models.DateField(blank=True, help_text='Date order was issued', null=True, verbose_name='Issue Date')),
+                ('updated_at', models.DateTimeField(blank=True, help_text='Timestamp of last update', null=True, verbose_name='Updated At')),
+                ('reference', models.CharField(default=order.validators.generate_next_repair_order_reference, help_text='Repair Order reference', max_length=64, unique=True, validators=[order.validators.validate_repair_order_reference], verbose_name='Reference')),
+                ('status_custom_key', generic.states.fields.ExtraInvenTreeCustomStatusModelField(blank=True, default=None, help_text='Additional status information for this item', null=True, validators=[generic.states.validators.CustomStatusCodeValidator(status_class=order.status_codes.RepairOrderStatus)], verbose_name='Custom status key')),
+                ('status', generic.states.fields.InvenTreeCustomStatusModelField(choices=[(10, 'Pending'), (20, 'In Progress'), (25, 'On Hold'), (30, 'Complete'), (40, 'Cancelled')], default=10, help_text='Repair order status', validators=[generic.states.validators.CustomStatusCodeValidator(status_class=order.status_codes.RepairOrderStatus)], verbose_name='Status')),
+                ('customer_reference', models.CharField(blank=True, help_text='Customer order reference code', max_length=64, verbose_name='Customer Reference ')),
+                ('complete_date', models.DateField(blank=True, help_text='Date order was completed', null=True, verbose_name='Completion Date')),
+                ('address', models.ForeignKey(blank=True, help_text='Company address for this order', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to='company.address', verbose_name='Address')),
+                ('contact', models.ForeignKey(blank=True, help_text='Point of contact for this order', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to='company.contact', verbose_name='Contact')),
+                ('created_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to=settings.AUTH_USER_MODEL, verbose_name='Created By')),
+                ('customer', models.ForeignKey(help_text='Company for which items are being repaired', limit_choices_to={'is_customer': True}, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='repair_orders', to='company.company', verbose_name='Customer')),
+                ('project_code', models.ForeignKey(blank=True, help_text='Select project code for this order', null=True, on_delete=django.db.models.deletion.SET_NULL, to='common.projectcode', verbose_name='Project Code')),
+                ('responsible', models.ForeignKey(blank=True, help_text='User or group responsible for this order', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to='users.owner', verbose_name='Responsible')),
+                ('tags', taggit.managers.TaggableManager(blank=True, help_text='A comma-separated list of tags.', through='taggit.TaggedItem', to='taggit.Tag', verbose_name='Tags')),
+            ],
+            options={
+                'verbose_name': 'Repair Order',
+            },
+            bases=(generic.states.states.StatusCodeMixin, generic.states.transition.StateTransitionMixin, InvenTree.models.InvenTreeAttachmentMixin, InvenTree.models.InvenTreePermissionCheckMixin, InvenTree.models.ContentTypeMixin, InvenTree.models.PluginValidationMixin, models.Model),
+        ),
+        migrations.CreateModel(
+            name='RepairOrderExtraLine',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('metadata', models.JSONField(blank=True, help_text='JSON metadata field, for use by external plugins', null=True, verbose_name='Plugin Metadata')),
+                ('quantity', InvenTree.fields.RoundingDecimalField(decimal_places=5, default=1, help_text='Item quantity', max_digits=15, validators=[django.core.validators.MinValueValidator(0)], verbose_name='Quantity')),
+                ('line', models.CharField(blank=True, default='', help_text='Line number for this item (optional)', max_length=20, verbose_name='Line Number')),
+                ('line_int', models.IntegerField(default=0)),
+                ('reference', models.CharField(blank=True, help_text='Line item reference', max_length=100, verbose_name='Reference')),
+                ('notes', models.CharField(blank=True, help_text='Line item notes', max_length=500, verbose_name='Notes')),
+                ('link', InvenTree.fields.InvenTreeURLField(blank=True, help_text='Link to external page', max_length=2000, verbose_name='Link')),
+                ('target_date', models.DateField(blank=True, help_text='Target date for this line item (leave blank to use the target date from the order)', null=True, verbose_name='Target Date')),
+                ('description', models.CharField(blank=True, help_text='Line item description (optional)', max_length=250, verbose_name='Description')),
+                ('context', models.JSONField(blank=True, help_text='Additional context for this line', null=True, verbose_name='Context')),
+                ('price_currency', djmoney.models.fields.CurrencyField(choices=[], default='', editable=False, max_length=3, null=True)),
+                ('price', InvenTree.fields.InvenTreeModelMoneyField(blank=True, currency_choices=[], decimal_places=6, default_currency='', help_text='Unit price', max_digits=19, null=True, validators=[djmoney.models.validators.MinMoneyValidator(0)], verbose_name='Price')),
+                ('order', models.ForeignKey(help_text='Repair Order', on_delete=django.db.models.deletion.CASCADE, related_name='extra_lines', to='order.repairorder', verbose_name='Order')),
+                ('project_code', models.ForeignKey(blank=True, help_text='Select project code for this order', null=True, on_delete=django.db.models.deletion.SET_NULL, to='common.projectcode', verbose_name='Project Code')),
+            ],
+            options={
+                'verbose_name': 'Repair Order Extra Line',
+            },
+            bases=(InvenTree.models.ContentTypeMixin, InvenTree.models.PluginValidationMixin, models.Model),
+        ),
+        migrations.CreateModel(
+            name='RepairOrderLineItem',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('metadata', models.JSONField(blank=True, help_text='JSON metadata field, for use by external plugins', null=True, verbose_name='Plugin Metadata')),
+                ('line', models.CharField(blank=True, default='', help_text='Line number for this item (optional)', max_length=20, verbose_name='Line Number')),
+                ('line_int', models.IntegerField(default=0)),
+                ('reference', models.CharField(blank=True, help_text='Line item reference', max_length=100, verbose_name='Reference')),
+                ('notes', models.CharField(blank=True, help_text='Line item notes', max_length=500, verbose_name='Notes')),
+                ('link', InvenTree.fields.InvenTreeURLField(blank=True, help_text='Link to external page', max_length=2000, verbose_name='Link')),
+                ('target_date', models.DateField(blank=True, help_text='Target date for this line item (leave blank to use the target date from the order)', null=True, verbose_name='Target Date')),
+                ('quantity', models.DecimalField(decimal_places=5, default=1, help_text='Quantity to repair', max_digits=15, validators=[django.core.validators.MinValueValidator(0)], verbose_name='Quantity')),
+                ('outcome_custom_key', generic.states.fields.ExtraInvenTreeCustomStatusModelField(blank=True, default=None, help_text='Additional status information for this item', null=True, validators=[generic.states.validators.CustomStatusCodeValidator(status_class=order.status_codes.ReturnOrderLineStatus)], verbose_name='Custom status key')),
+                ('outcome', generic.states.fields.InvenTreeCustomStatusModelField(choices=[(10, 'Pending'), (20, 'Return'), (30, 'Repair'), (40, 'Replace'), (50, 'Refund'), (60, 'Reject')], default=10, help_text='Outcome for this line item', validators=[generic.states.validators.CustomStatusCodeValidator(status_class=order.status_codes.ReturnOrderLineStatus)], verbose_name='Outcome')),
+                ('price_currency', djmoney.models.fields.CurrencyField(choices=[], default='', editable=False, max_length=3, null=True)),
+                ('price', InvenTree.fields.InvenTreeModelMoneyField(blank=True, currency_choices=[], decimal_places=6, default_currency='', help_text='Cost associated with repair for this line item', max_digits=19, null=True, validators=[djmoney.models.validators.MinMoneyValidator(0)], verbose_name='Price')),
+                ('item', models.ForeignKey(help_text='Select item to repair for customer', on_delete=django.db.models.deletion.CASCADE, related_name='repair_order_lines', to='stock.stockitem', verbose_name='Item')),
+                ('order', models.ForeignKey(help_text='Repair Order', on_delete=django.db.models.deletion.CASCADE, related_name='lines', to='order.repairorder', verbose_name='Order')),
+                ('project_code', models.ForeignKey(blank=True, help_text='Select project code for this order', null=True, on_delete=django.db.models.deletion.SET_NULL, to='common.projectcode', verbose_name='Project Code')),
+            ],
+            options={
+                'verbose_name': 'Repair Order Line Item',
+                'unique_together': {('order', 'item')},
+            },
+            bases=(generic.states.states.StatusCodeMixin, InvenTree.models.ContentTypeMixin, InvenTree.models.PluginValidationMixin, models.Model),
+        ),
+    ]

src/backend/InvenTree/order/models.py

@@ -47,6 +47,7 @@ from InvenTree.helpers import decimal2string, pui_url
 from InvenTree.helpers_model import notify_responsible
 from order.events import (
     PurchaseOrderEvents,
+    RepairOrderEvents,
     ReturnOrderEvents,
     SalesOrderEvents,
     TransferOrderEvents,
@@ -54,6 +55,8 @@ from order.events import (
 from order.status_codes import (
     PurchaseOrderStatus,
     PurchaseOrderStatusGroups,
+    RepairOrderStatus,
+    RepairOrderStatusGroups,
     ReturnOrderLineStatus,
     ReturnOrderStatus,
     ReturnOrderStatusGroups,
@@ -272,6 +275,28 @@ class ReturnOrderReportContext(report.mixins.BaseReportContext, TypedDict):
     customer: Optional[Company]
 
 
+class RepairOrderReportContext(report.mixins.BaseReportContext, TypedDict):
+    """Context for the repair order model.
+
+    Attributes:
+        description: The description field of the RepairOrder
+        reference: The reference field of the RepairOrder
+        title: The title (string representation) of the RepairOrder
+        extra_lines: Query set of all extra lines associated with the RepairOrder
+        lines: Query set of all line items associated with the RepairOrder
+        order: The RepairOrder instance itself
+        customer: The customer object associated with the RepairOrder
+    """
+
+    description: str
+    reference: str
+    title: str
+    extra_lines: report.mixins.QuerySet['RepairOrderExtraLine']
+    lines: report.mixins.QuerySet['RepairOrderLineItem']
+    order: 'RepairOrder'
+    customer: Optional[Company]
+
+
 class TransferOrderReportContext(BaseOrderReportContext, TypedDict):
     """Context for the transfer order model.
 
@@ -3351,6 +3376,346 @@ class ReturnOrderExtraLine(OrderExtraLine):
     )
 
 
+class RepairOrder(TotalPriceMixin, Order):
+    """A RepairOrder represents a customer's item which is to be repaired.
+
+    Attributes:
+        customer: Reference to the customer
+        status: The status of the order (refer to status_codes.RepairOrderStatus)
+    """
+
+    REFERENCE_PATTERN_SETTING = 'REPAIRORDER_REFERENCE_PATTERN'
+    REQUIRE_RESPONSIBLE_SETTING = 'REPAIRORDER_REQUIRE_RESPONSIBLE'
+    STATUS_CLASS = RepairOrderStatus
+    UNLOCK_SETTING = 'REPAIRORDER_EDIT_COMPLETED_ORDERS'
+
+    class Meta:
+        """Model meta options."""
+
+        verbose_name = _('Repair Order')
+
+    def report_context(self) -> RepairOrderReportContext:
+        """Generate report context data for this RepairOrder."""
+        repair_ctx = super().report_context()
+
+        repair_ctx.update({'customer': self.customer})  # ty:ignore[invalid-key]
+        return repair_ctx
+
+    def get_absolute_url(self):
+        """Get the 'web' URL for this order."""
+        return pui_url(f'/sales/repair-order/{self.pk}')
+
+    @staticmethod
+    def get_api_url():
+        """Return the API URL associated with the RepairOrder model."""
+        return reverse('api-repair-order-list')
+
+    @classmethod
+    def get_status_class(cls):
+        """Return the RepairOrderStatus class."""
+        return RepairOrderStatusGroups
+
+    @classmethod
+    def api_defaults(cls, request=None):
+        """Return default values for this model when issuing an API OPTIONS request."""
+        defaults = {
+            'reference': order.validators.generate_next_repair_order_reference()
+        }
+
+        return defaults
+
+    @classmethod
+    def barcode_model_type_code(cls):
+        """Return the associated barcode model type code for this model."""
+        return 'RP'
+
+    def subscribed_users(self) -> list[User]:
+        """Return a list of users subscribed to this RepairOrder.
+
+        By this, we mean users to are interested in any of the parts associated with this order.
+        """
+        subscribed_users = set()
+
+        for line in self.lines.all():
+            if line.item and line.item.part:
+                # Add the part to the list of subscribed users
+                for user in line.item.part.get_subscribers():
+                    subscribed_users.add(user)
+
+        return list(subscribed_users)
+
+    def __str__(self):
+        """Render a string representation of this RepairOrder."""
+        return f'{self.reference} - {self.customer.name if self.customer else _("no customer")}'
+
+    reference = models.CharField(
+        unique=True,
+        max_length=64,
+        blank=False,
+        verbose_name=_('Reference'),
+        help_text=_('Repair Order reference'),
+        default=order.validators.generate_next_repair_order_reference,
+        validators=[order.validators.validate_repair_order_reference],
+    )
+
+    customer = models.ForeignKey(
+        Company,
+        on_delete=models.SET_NULL,
+        null=True,
+        limit_choices_to={'is_customer': True},
+        related_name='repair_orders',
+        verbose_name=_('Customer'),
+        help_text=_('Company for which items are being repaired'),
+    )
+
+    @property
+    def company(self):
+        """Accessor helper for Order base class."""
+        return self.customer
+
+    status = InvenTreeCustomStatusModelField(
+        default=RepairOrderStatus.PENDING.value,
+        choices=RepairOrderStatus.items(),
+        status_class=RepairOrderStatus,
+        verbose_name=_('Status'),
+        help_text=_('Repair order status'),
+    )
+
+    customer_reference = models.CharField(
+        max_length=64,
+        blank=True,
+        verbose_name=_('Customer Reference '),
+        help_text=_('Customer order reference code'),
+    )
+
+    complete_date = models.DateField(
+        blank=True,
+        null=True,
+        verbose_name=_('Completion Date'),
+        help_text=_('Date order was completed'),
+    )
+
+    # region state changes
+    @property
+    def is_pending(self):
+        """Return True if this order is pending."""
+        return self.status == RepairOrderStatus.PENDING
+
+    @property
+    def is_open(self):
+        """Return True if this order is outstanding."""
+        return self.status in RepairOrderStatusGroups.OPEN
+
+    @property
+    def can_hold(self):
+        """Return True if this order can be placed on hold."""
+        return self.status in [
+            RepairOrderStatus.PENDING.value,
+            RepairOrderStatus.IN_PROGRESS.value,
+        ]
+
+    def _action_hold(self, *args, **kwargs):
+        """Mark this order as 'on hold' (if allowed)."""
+        if self.can_hold:
+            self.status = RepairOrderStatus.ON_HOLD.value
+            self.save()
+
+            trigger_event(RepairOrderEvents.HOLD, id=self.pk)
+
+    @property
+    def can_cancel(self):
+        """Return True if this order can be cancelled."""
+        return self.status in RepairOrderStatusGroups.OPEN
+
+    def _action_cancel(self, *args, **kwargs):
+        """Cancel this RepairOrder (if not already cancelled)."""
+        if self.can_cancel:
+            self.status = RepairOrderStatus.CANCELLED.value
+            self.save()
+
+            trigger_event(RepairOrderEvents.CANCELLED, id=self.pk)
+
+            # Notify users that the order has been canceled
+            notify_responsible(
+                self,
+                RepairOrder,
+                exclude=self.created_by,
+                content=InvenTreeNotificationBodies.OrderCanceled,
+                extra_users=self.subscribed_users(),
+            )
+
+    def _action_complete(self, *args, **kwargs):
+        """Complete this RepairOrder (if not already completed)."""
+        if self.status == RepairOrderStatus.IN_PROGRESS.value:
+            self.status = RepairOrderStatus.COMPLETE.value
+            self.complete_date = InvenTree.helpers.current_date()
+            self.save()
+
+            trigger_event(RepairOrderEvents.COMPLETED, id=self.pk)
+
+    def place_order(self):
+        """Deprecated version of 'issue_order."""
+        self.issue_order()
+
+    @property
+    def can_issue(self):
+        """Return True if this order can be issued."""
+        return self.status in [
+            RepairOrderStatus.PENDING.value,
+            RepairOrderStatus.ON_HOLD.value,
+        ]
+
+    def _action_place(self, *args, **kwargs):
+        """Issue this RepairOrder (if currently pending)."""
+        if self.can_issue:
+            self.status = RepairOrderStatus.IN_PROGRESS.value
+            self.issue_date = InvenTree.helpers.current_date()
+            self.save()
+
+            trigger_event(RepairOrderEvents.ISSUED, id=self.pk)
+
+            # Notify users that the order has been placed
+            notify_responsible(
+                self,
+                RepairOrder,
+                exclude=self.created_by,
+                content=InvenTreeNotificationBodies.NewOrder,
+                extra_users=self.subscribed_users(),
+            )
+
+    @transaction.atomic
+    def hold_order(self):
+        """Attempt to transition to ON_HOLD status."""
+        return self.handle_transition(
+            self.status, RepairOrderStatus.ON_HOLD.value, self, self._action_hold
+        )
+
+    @transaction.atomic
+    def issue_order(self):
+        """Attempt to transition to IN_PROGRESS status."""
+        return self.handle_transition(
+            self.status, RepairOrderStatus.IN_PROGRESS.value, self, self._action_place
+        )
+
+    @transaction.atomic
+    def complete_order(self):
+        """Attempt to transition to COMPLETE status."""
+        return self.handle_transition(
+            self.status, RepairOrderStatus.COMPLETE.value, self, self._action_complete
+        )
+
+    @transaction.atomic
+    def cancel_order(self):
+        """Attempt to transition to CANCELLED status."""
+        return self.handle_transition(
+            self.status, RepairOrderStatus.CANCELLED.value, self, self._action_cancel
+        )
+
+    # endregion
+
+
+class RepairOrderLineItem(StatusCodeMixin, OrderLineItem):
+    """Model for a single LineItem in a RepairOrder."""
+
+    STATUS_CLASS = ReturnOrderLineStatus
+    STATUS_FIELD = 'outcome'
+
+    class Meta:
+        """Metaclass options for this model."""
+
+        verbose_name = _('Repair Order Line Item')
+        unique_together = [('order', 'item')]
+
+    @staticmethod
+    def get_api_url():
+        """Return the API URL associated with this model."""
+        return reverse('api-repair-order-line-list')
+
+    def clean(self):
+        """Perform extra validation steps for the RepairOrderLineItem model."""
+        super().clean()
+
+        if not self.item:
+            raise ValidationError({'item': _('Stock item must be specified')})
+
+        if self.quantity > self.item.quantity:
+            raise ValidationError({
+                'quantity': _('Repair quantity exceeds stock quantity')
+            })
+
+        if self.quantity <= 0:
+            raise ValidationError({
+                'quantity': _('Repair quantity must be greater than zero')
+            })
+
+        if self.item.serialized and self.quantity != 1:
+            raise ValidationError({
+                'quantity': _('Invalid quantity for serialized stock item')
+            })
+
+    order = models.ForeignKey(
+        RepairOrder,
+        on_delete=models.CASCADE,
+        related_name='lines',
+        verbose_name=_('Order'),
+        help_text=_('Repair Order'),
+    )
+
+    item = models.ForeignKey(
+        stock.models.StockItem,
+        on_delete=models.CASCADE,
+        related_name='repair_order_lines',
+        verbose_name=_('Item'),
+        help_text=_('Select item to repair for customer'),
+    )
+
+    quantity = models.DecimalField(
+        verbose_name=('Quantity'),
+        help_text=('Quantity to repair'),
+        max_digits=15,
+        decimal_places=5,
+        validators=[MinValueValidator(0)],
+        default=1,
+    )
+
+    outcome = InvenTreeCustomStatusModelField(
+        default=ReturnOrderLineStatus.PENDING.value,
+        choices=ReturnOrderLineStatus.items(),
+        status_class=ReturnOrderLineStatus,
+        verbose_name=_('Outcome'),
+        help_text=_('Outcome for this line item'),
+    )
+
+    price = InvenTreeModelMoneyField(
+        null=True,
+        blank=True,
+        verbose_name=_('Price'),
+        help_text=_('Cost associated with repair for this line item'),
+    )
+
+
+class RepairOrderExtraLine(OrderExtraLine):
+    """Model for a single ExtraLine in a RepairOrder."""
+
+    class Meta:
+        """Metaclass options for this model."""
+
+        verbose_name = _('Repair Order Extra Line')
+
+    @staticmethod
+    def get_api_url():
+        """Return the API URL associated with the RepairOrderExtraLine model."""
+        return reverse('api-repair-order-extra-line-list')
+
+    order = models.ForeignKey(
+        RepairOrder,
+        on_delete=models.CASCADE,
+        related_name='extra_lines',
+        verbose_name=_('Order'),
+        help_text=_('Repair Order'),
+    )
+
+
 class TransferOrder(Order):
     """A Transfer Order represents a request to transfer stock from one location to another. It provides a place to queue and review changes before execution.
 

src/backend/InvenTree/order/serializers.py

@@ -2453,6 +2453,203 @@ class ReturnOrderExtraLineSerializer(
     )
 
 
+@register_importer()
+class RepairOrderSerializer(
+    NotesFieldMixin,
+    InvenTreeCustomStatusSerializerMixin,
+    AbstractOrderSerializer,
+    TotalPriceMixin,
+    InvenTreeModelSerializer,
+):
+    """Serializer for the RepairOrder model class."""
+
+    class Meta:
+        """Metaclass options."""
+
+        model = order.models.RepairOrder
+        fields = AbstractOrderSerializer.order_fields([
+            'complete_date',
+            'customer',
+            'customer_detail',
+            'customer_reference',
+            'order_currency',
+            'total_price',
+            'updated_at',
+        ])
+        read_only_fields = ['creation_date', 'updated_at']
+
+    def skip_create_fields(self):
+        """Skip these fields when instantiating a new object."""
+        fields = super().skip_create_fields()
+
+        return [*fields, 'duplicate']
+
+    # Note: line items cannot be duplicated from a RepairOrder,
+    # as they are linked to specific stock items
+    duplicate = DuplicateOptionsSerializer(
+        order.models.RepairOrder.objects.all(),
+        copy_extra_lines=True,
+        copy_parameters=True,
+    )
+
+    @staticmethod
+    def annotate_queryset(queryset):
+        """Custom annotation for the serializer queryset."""
+        queryset = AbstractOrderSerializer.annotate_queryset(queryset)
+
+        queryset = queryset.annotate(
+            completed_lines=SubqueryCount(
+                'lines', filter=~Q(outcome=ReturnOrderLineStatus.PENDING.value)
+            )
+        )
+
+        queryset = queryset.annotate(
+            overdue=Case(
+                When(
+                    order.models.RepairOrder.overdue_filter(),
+                    then=Value(True, output_field=BooleanField()),
+                ),
+                default=Value(False, output_field=BooleanField()),
+            )
+        )
+
+        return queryset
+
+    customer_detail = OptionalField(
+        serializer_class=CompanyBriefSerializer,
+        serializer_kwargs={
+            'source': 'customer',
+            'many': False,
+            'read_only': True,
+            'allow_null': True,
+        },
+        prefetch_fields=['customer'],
+    )
+
+
+class RepairOrderHoldSerializer(OrderAdjustSerializer):
+    """Serializers for holding a RepairOrder."""
+
+    def save(self):
+        """Save the serializer to 'hold' the order."""
+        self.order.hold_order()
+
+
+class RepairOrderIssueSerializer(OrderAdjustSerializer):
+    """Serializer for issuing a RepairOrder."""
+
+    def save(self):
+        """Save the serializer to 'issue' the order."""
+        self.order.issue_order()
+
+
+class RepairOrderCancelSerializer(OrderAdjustSerializer):
+    """Serializer for cancelling a RepairOrder."""
+
+    def save(self):
+        """Save the serializer to 'cancel' the order."""
+        self.order.cancel_order()
+
+
+class RepairOrderCompleteSerializer(OrderAdjustSerializer):
+    """Serializer for completing a RepairOrder."""
+
+    def save(self):
+        """Save the serializer to 'complete' the order."""
+        self.order.complete_order()
+
+
+@register_importer()
+class RepairOrderLineItemSerializer(
+    DataImportExportSerializerMixin,
+    AbstractLineItemSerializer,
+    InvenTreeModelSerializer,
+):
+    """Serializer for a RepairOrderLineItem object."""
+
+    class Meta:
+        """Metaclass options."""
+
+        model = order.models.RepairOrderLineItem
+        fields = AbstractLineItemSerializer.line_fields([
+            'item',
+            'outcome',
+            'price',
+            'price_currency',
+            # Filterable detail fields
+            'item_detail',
+            'part_detail',
+        ])
+
+    order_detail = OptionalField(
+        serializer_class=RepairOrderSerializer,
+        serializer_kwargs={
+            'source': 'order',
+            'many': False,
+            'read_only': True,
+            'allow_null': True,
+        },
+        prefetch_fields=[
+            'order__created_by',
+            'order__responsible',
+            'order__address',
+            'order__project_code',
+            'order__contact',
+        ],
+    )
+
+    quantity = serializers.FloatField(
+        label=_('Quantity'), help_text=_('Quantity to repair')
+    )
+
+    item_detail = OptionalField(
+        serializer_class=stock.serializers.StockItemSerializer,
+        serializer_kwargs={
+            'source': 'item',
+            'many': False,
+            'read_only': True,
+            'allow_null': True,
+        },
+        prefetch_fields=['item__supplier_part'],
+    )
+
+    part_detail = OptionalField(
+        serializer_class=PartBriefSerializer,
+        serializer_kwargs={
+            'source': 'item.part',
+            'many': False,
+            'read_only': True,
+            'allow_null': True,
+        },
+    )
+
+    price = InvenTreeMoneySerializer(allow_null=True)
+    price_currency = InvenTreeCurrencySerializer(help_text=_('Line price currency'))
+
+
+@register_importer()
+class RepairOrderExtraLineSerializer(
+    AbstractExtraLineSerializer, InvenTreeModelSerializer
+):
+    """Serializer for a RepairOrderExtraLine object."""
+
+    class Meta(AbstractExtraLineMeta):
+        """Metaclass options."""
+
+        model = order.models.RepairOrderExtraLine
+        fields = AbstractExtraLineSerializer.extra_line_fields([])
+
+    order_detail = OptionalField(
+        serializer_class=RepairOrderSerializer,
+        serializer_kwargs={
+            'source': 'order',
+            'many': False,
+            'read_only': True,
+            'allow_null': True,
+        },
+    )
+
+
 @register_importer()
 class TransferOrderSerializer(
     NotesFieldMixin,

src/backend/InvenTree/order/status_codes.py

@@ -118,6 +118,33 @@ class ReturnOrderLineStatus(StatusCode):
     REJECT = 60, _('Reject'), ColorEnum.danger
 
 
+class RepairOrderStatus(StatusCode):
+    """Defines a set of status codes for a RepairOrder."""
+
+    # Order is pending, waiting for the item to be repaired
+    PENDING = 10, _('Pending'), ColorEnum.secondary
+
+    # Item is currently being repaired
+    IN_PROGRESS = 20, _('In Progress'), ColorEnum.primary
+
+    ON_HOLD = 25, _('On Hold'), ColorEnum.warning
+
+    COMPLETE = 30, _('Complete'), ColorEnum.success
+    CANCELLED = 40, _('Cancelled'), ColorEnum.danger
+
+
+class RepairOrderStatusGroups:
+    """Groups for RepairOrderStatus codes."""
+
+    OPEN = [
+        RepairOrderStatus.PENDING.value,
+        RepairOrderStatus.ON_HOLD.value,
+        RepairOrderStatus.IN_PROGRESS.value,
+    ]
+
+    COMPLETE = [RepairOrderStatus.COMPLETE.value]
+
+
 class TransferOrderStatus(StatusCode):
     """Defines a set of status codes for a TransferOrder."""
 

src/backend/InvenTree/order/test_api.py

@@ -25,6 +25,7 @@ from order import models
 from order.models import SalesOrderAllocation, SalesOrderLineItem, SalesOrderShipment
 from order.status_codes import (
     PurchaseOrderStatus,
+    RepairOrderStatus,
     ReturnOrderLineStatus,
     ReturnOrderStatus,
     SalesOrderStatus,
@@ -3017,6 +3018,176 @@ class ReturnOrderTests(InvenTreeAPITestCase):
         )
 
 
+class RepairOrderTests(InvenTreeAPITestCase):
+    """Unit tests for RepairOrder API endpoints."""
+
+    fixtures = [
+        'category',
+        'company',
+        'repair_order',
+        'part',
+        'location',
+        'supplier_part',
+        'stock',
+    ]
+    roles = ['repair_order.view']
+
+    def test_options(self):
+        """Test the OPTIONS endpoint."""
+        self.assignRole('repair_order.add')
+        data = self.options(reverse('api-repair-order-list'), expected_code=200).data
+
+        self.assertEqual(data['name'], 'Repair Order List')
+
+        # Some checks on the 'reference' field
+        post = data['actions']['POST']
+        reference = post['reference']
+
+        self.assertEqual(reference['default'], 'RP-0007')
+        self.assertEqual(reference['label'], 'Reference')
+        self.assertEqual(reference['help_text'], 'Repair Order reference')
+        self.assertEqual(reference['required'], True)
+        self.assertEqual(reference['type'], 'string')
+
+    def test_list(self):
+        """Tests for the list endpoint."""
+        url = reverse('api-repair-order-list')
+
+        response = self.get(url, expected_code=200)
+
+        self.assertEqual(len(response.data), 6)
+
+        # Paginated query
+        data = self.get(
+            url,
+            {'limit': 1, 'ordering': 'reference', 'customer_detail': True},
+            expected_code=200,
+        ).data
+
+        self.assertEqual(data['count'], 6)
+        self.assertEqual(len(data['results']), 1)
+        result = data['results'][0]
+        self.assertEqual(result['reference'], 'RP-001')
+        self.assertEqual(result['customer_detail']['name'], 'A customer')
+
+        # Reverse ordering
+        data = self.get(url, {'ordering': '-reference'}, expected_code=200).data
+
+        self.assertEqual(data[0]['reference'], 'RP-006')
+
+        # Filter by customer
+        for cmp_id in [4, 5]:
+            data = self.get(url, {'customer': cmp_id}, expected_code=200).data
+
+            self.assertEqual(len(data), 3)
+
+            for result in data:
+                self.assertEqual(result['customer'], cmp_id)
+
+        # Filter by status
+        data = self.get(
+            url, {'status': RepairOrderStatus.IN_PROGRESS.value}, expected_code=200
+        ).data
+
+        self.assertEqual(len(data), 2)
+
+        for result in data:
+            self.assertEqual(result['status'], 20)
+
+    def test_create(self):
+        """Test creation of RepairOrder via the API."""
+        url = reverse('api-repair-order-list')
+
+        # Do not have required permissions yet
+        self.post(
+            url, {'customer': 1, 'description': 'a repair order'}, expected_code=403
+        )
+
+        self.assignRole('repair_order.add')
+
+        data = self.post(
+            url,
+            {
+                'customer': 4,
+                'customer_reference': 'cr',
+                'description': 'a repair order',
+            },
+            expected_code=201,
+        ).data
+
+        # Reference automatically generated
+        self.assertEqual(data['reference'], 'RP-0007')
+        self.assertEqual(data['customer_reference'], 'cr')
+
+    def test_detail(self):
+        """Test that we can view and update a RepairOrder via the API."""
+        url = reverse('api-repair-order-detail', kwargs={'pk': 1})
+
+        # Test detail endpoint
+        data = self.get(url, expected_code=200).data
+
+        self.assertEqual(data['reference'], 'RP-001')
+
+        # Attempt to update, incorrect permissions
+        self.patch(
+            url, {'customer_reference': 'My customer reference'}, expected_code=403
+        )
+
+        self.assignRole('repair_order.change')
+
+        self.patch(url, {'customer_reference': 'customer ref'}, expected_code=200)
+
+        rp = models.RepairOrder.objects.get(pk=1)
+        self.assertEqual(rp.customer_reference, 'customer ref')
+
+    def test_state_transitions(self):
+        """Test the state transition endpoints for a RepairOrder."""
+        # Issue: PENDING -> IN_PROGRESS
+        order = models.RepairOrder.objects.get(pk=1)
+        self.assertEqual(order.status, RepairOrderStatus.PENDING)
+        self.assertIsNone(order.issue_date)
+
+        url = reverse('api-repair-order-issue', kwargs={'pk': 1})
+
+        # POST without required permissions
+        self.post(url, expected_code=403)
+
+        self.assignRole('repair_order.add')
+
+        self.post(url, expected_code=201)
+        order.refresh_from_db()
+        self.assertEqual(order.status, RepairOrderStatus.IN_PROGRESS)
+        self.assertIsNotNone(order.issue_date)
+
+        # Hold: IN_PROGRESS -> ON_HOLD
+        self.post(reverse('api-repair-order-hold', kwargs={'pk': 1}), expected_code=201)
+        order.refresh_from_db()
+        self.assertEqual(order.status, RepairOrderStatus.ON_HOLD)
+
+        # Issue again: ON_HOLD -> IN_PROGRESS
+        self.post(url, expected_code=201)
+        order.refresh_from_db()
+        self.assertEqual(order.status, RepairOrderStatus.IN_PROGRESS)
+
+        # Complete: IN_PROGRESS -> COMPLETE
+        self.post(
+            reverse('api-repair-order-complete', kwargs={'pk': 1}), expected_code=201
+        )
+        order.refresh_from_db()
+        self.assertEqual(order.status, RepairOrderStatus.COMPLETE)
+        self.assertIsNotNone(order.complete_date)
+
+        # Cancel a different (still open) order
+        cancel_order = models.RepairOrder.objects.get(pk=6)
+        self.assertEqual(cancel_order.status, RepairOrderStatus.PENDING)
+
+        self.post(
+            reverse('api-repair-order-cancel', kwargs={'pk': 6}), expected_code=201
+        )
+        cancel_order.refresh_from_db()
+        self.assertEqual(cancel_order.status, RepairOrderStatus.CANCELLED)
+
+
 class ReturnOrderLineItemTests(InvenTreeAPITestCase):
     """Unit tests for ReturnOrderLineItem API endpoints."""
 

src/backend/InvenTree/order/validators.py

@@ -22,6 +22,13 @@ def generate_next_return_order_reference():
     return ReturnOrder.generate_reference()
 
 
+def generate_next_repair_order_reference():
+    """Generate the next available RepairOrder reference."""
+    from order.models import RepairOrder
+
+    return RepairOrder.generate_reference()
+
+
 def generate_next_transfer_order_reference():
     """Generate the next available TransferOrder reference."""
     from order.models import TransferOrder
@@ -50,6 +57,13 @@ def validate_return_order_reference_pattern(pattern):
     ReturnOrder.validate_reference_pattern(pattern)
 
 
+def validate_repair_order_reference_pattern(pattern):
+    """Validate the RepairOrder reference 'pattern' setting."""
+    from order.models import RepairOrder
+
+    RepairOrder.validate_reference_pattern(pattern)
+
+
 def validate_sales_order_reference(value):
     """Validate that the SalesOrder reference field matches the required pattern."""
     from order.models import SalesOrder
@@ -71,6 +85,13 @@ def validate_return_order_reference(value):
     ReturnOrder.validate_reference_field(value)
 
 
+def validate_repair_order_reference(value):
+    """Validate that the RepairOrder reference field matches the required pattern."""
+    from order.models import RepairOrder
+
+    RepairOrder.validate_reference_field(value)
+
+
 def validate_transfer_order_reference_pattern(pattern):
     """Validate the TransferOrder reference 'pattern' setting."""
     from order.models import TransferOrder

src/backend/InvenTree/users/oauth2_scopes.py

@@ -20,6 +20,7 @@ _roles = {
     'purchase_order': 'Role Purchase Orders',
     'sales_order': 'Role Sales Orders',
     'return_order': 'Role Return Orders',
+    'repair_order': 'Role Repair Orders',
     'transfer_order': 'Role Transfer Orders',
 }
 _methods = {'view': 'GET', 'add': 'POST', 'change': 'PUT / PATCH', 'delete': 'DELETE'}

src/backend/InvenTree/users/ruleset.py

@@ -19,6 +19,7 @@ class RuleSetEnum(StringEnum):
     PURCHASE_ORDER = 'purchase_order'
     SALES_ORDER = 'sales_order'
     RETURN_ORDER = 'return_order'
+    REPAIR_ORDER = 'repair_order'
     TRANSFER_ORDER = 'transfer_order'
 
 
@@ -35,6 +36,7 @@ RULESET_CHOICES = [
     (RuleSetEnum.PURCHASE_ORDER, _('Purchase Orders')),
     (RuleSetEnum.SALES_ORDER, _('Sales Orders')),
     (RuleSetEnum.RETURN_ORDER, _('Return Orders')),
+    (RuleSetEnum.REPAIR_ORDER, _('Repair Orders')),
     (RuleSetEnum.TRANSFER_ORDER, _('Transfer Orders')),
 ]
 
@@ -163,6 +165,14 @@ def get_ruleset_models() -> dict:
             'order_returnorderlineitem',
             'order_returnorderextraline',
         ],
+        RuleSetEnum.REPAIR_ORDER: [
+            'company_company',
+            'company_contact',
+            'company_address',
+            'order_repairorder',
+            'order_repairorderlineitem',
+            'order_repairorderextraline',
+        ],
         RuleSetEnum.TRANSFER_ORDER: [
             'order_transferorder',
             'order_transferorderallocation',