Merge pull request #52703 from frappe/mergify/bp/version-16-hotfix/pr-52626

fix(manufacturing): add sales order fields in subassembly child table (backport #52626)

erpnext/manufacturing/doctype/production_plan/production_plan.py

@@ -844,6 +844,8 @@ class ProductionPlan(Document):
 			"stock_uom",
 			"bom_level",
 			"schedule_date",
+			"sales_order",
+			"sales_order_item",
 		]:
 			if row.get(field):
 				wo_data[field] = row.get(field)
@@ -898,6 +900,8 @@ class ProductionPlan(Document):
 					"qty",
 					"description",
 					"production_plan_item",
+					"sales_order",
+					"sales_order_item",
 				]:
 					po_data[field] = row.get(field)
 
@@ -1122,6 +1126,10 @@ class ProductionPlan(Document):
 			if not is_group_warehouse:
 				data.fg_warehouse = self.sub_assembly_warehouse
 
+			if not self.combine_sub_items:
+				data.sales_order = row.sales_order
+				data.sales_order_item = row.sales_order_item
+
 	def set_default_supplier_for_subcontracting_order(self):
 		items = [
 			d.production_item for d in self.sub_assembly_items if d.type_of_manufacturing == "Subcontract"

erpnext/manufacturing/doctype/production_plan/test_production_plan.py

@@ -626,6 +626,90 @@ class TestProductionPlan(IntegrationTestCase):
 			frappe.db.count("Purchase Order Item", {"production_plan": plan.name, "docstatus": 1}), 2
 		)  # 2 since we have already created and submitted 2 POs
 
+	def test_sales_order_references_for_sub_assembly_items(self):
+		"""
+		Test that Sales Order and Sales Order Item references in Work Order and Purchase Order
+		are correctly propagated from the Production Plan.
+		"""
+
+		from erpnext.manufacturing.doctype.bom.test_bom import create_nested_bom
+
+		# Setup Test Items & BOM
+		fg_item = "Test FG Good Item"
+		sub_assembly_item1 = "Test Sub Assembly Item 1"
+		sub_assembly_item2 = "Test Sub Assembly Item 2"
+
+		bom_tree = {
+			fg_item: {
+				sub_assembly_item1: {"Test Raw Material 1": {}},
+				sub_assembly_item2: {"Test Raw Material 2": {}},
+			}
+		}
+
+		create_nested_bom(bom_tree, prefix="")
+
+		# Create Sales Order
+		so = make_sales_order(item_code=fg_item, qty=10)
+		so_item_row = so.items[0].name
+
+		# Create Production Plan from Sales Order
+		production_plan = frappe.new_doc("Production Plan")
+		production_plan.company = so.company
+		production_plan.get_items_from = "Sales Order"
+		production_plan.item_code = fg_item
+
+		production_plan.get_open_sales_orders()
+		self.assertEqual(production_plan.sales_orders[0].sales_order, so.name)
+
+		production_plan.get_so_items()
+
+		production_plan.skip_available_sub_assembly_item = 0
+		production_plan.get_sub_assembly_items()
+
+		self.assertEqual(len(production_plan.sub_assembly_items), 2)
+
+		# Validate Sales Order references in Sub Assembly Items
+		for row in production_plan.sub_assembly_items:
+			if row.production_item == sub_assembly_item1:
+				row.supplier = "_Test Supplier"
+				row.type_of_manufacturing = "Subcontract"
+
+			self.assertEqual(row.sales_order, so.name)
+			self.assertEqual(row.sales_order_item, so_item_row)
+
+		# Submit Production Plan
+		production_plan.save()
+		production_plan.submit()
+		production_plan.make_work_order()
+
+		# Validate Purchase Order (Subcontracted Item)
+		po_items = frappe.get_all(
+			"Purchase Order Item",
+			{
+				"production_plan": production_plan.name,
+				"fg_item": sub_assembly_item1,
+			},
+			["sales_order", "sales_order_item"],
+		)
+
+		self.assertTrue(po_items)
+		self.assertEqual(po_items[0].sales_order, so.name)
+		self.assertEqual(po_items[0].sales_order_item, so_item_row)
+
+		# Validate Work Order (In-house Item)
+		work_orders = frappe.get_all(
+			"Work Order",
+			{
+				"production_plan": production_plan.name,
+				"production_item": sub_assembly_item2,
+			},
+			["sales_order", "sales_order_item"],
+		)
+
+		self.assertTrue(work_orders)
+		self.assertEqual(work_orders[0].sales_order, so.name)
+		self.assertEqual(work_orders[0].sales_order_item, so_item_row)
+
 	def test_production_plan_for_mr_items(self):
 		from erpnext.manufacturing.doctype.bom.test_bom import create_nested_bom
 

erpnext/manufacturing/doctype/production_plan_sub_assembly_item/production_plan_sub_assembly_item.json

@@ -21,6 +21,9 @@
   "subcontracting_section",
   "supplier",
   "purchase_order",
+  "column_break_oqry",
+  "sales_order",
+  "sales_order_item",
   "work_order_details_section",
   "production_plan_item",
   "wo_produced_qty",
@@ -240,13 +243,32 @@
    "label": "Ordered Qty",
    "no_copy": 1,
    "read_only": 1
+  },
+  {
+   "fieldname": "column_break_oqry",
+   "fieldtype": "Column Break"
+  },
+  {
+   "fieldname": "sales_order",
+   "fieldtype": "Link",
+   "label": "Sales Order",
+   "options": "Sales Order",
+   "read_only": 1
+  },
+  {
+   "fieldname": "sales_order_item",
+   "fieldtype": "Data",
+   "hidden": 1,
+   "label": "Sales Order Item",
+   "no_copy": 1,
+   "print_hide": 1
   }
  ],
  "grid_page_length": 50,
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2025-11-03 14:33:50.677717",
+ "modified": "2026-02-11 13:00:09.092676",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "Production Plan Sub Assembly Item",

erpnext/manufacturing/doctype/production_plan_sub_assembly_item/production_plan_sub_assembly_item.py

@@ -34,6 +34,8 @@ class ProductionPlanSubAssemblyItem(Document):
 		qty: DF.Float
 		received_qty: DF.Float
 		required_qty: DF.Float
+		sales_order: DF.Link | None
+		sales_order_item: DF.Data | None
 		schedule_date: DF.Datetime | None
 		stock_reserved_qty: DF.Float
 		stock_uom: DF.Link | None