Merge pull request #23662 from rohitwaghchaure/backport-subcontracting-issues

fix: multiple subcontracting issues

erpnext/buying/doctype/purchase_order/test_purchase_order.py

@@ -19,6 +19,8 @@ from erpnext.controllers.accounts_controller import update_child_qty_rate
 from erpnext.controllers.status_updater import OverAllowanceError
 from erpnext.manufacturing.doctype.blanket_order.test_blanket_order import make_blanket_order
 
+from erpnext.stock.doctype.batch.test_batch import make_new_batch
+from erpnext.controllers.buying_controller import get_backflushed_subcontracted_raw_materials
 
 class TestPurchaseOrder(unittest.TestCase):
 	def test_make_purchase_receipt(self):
@@ -686,7 +688,7 @@ class TestPurchaseOrder(unittest.TestCase):
 
 	def test_exploded_items_in_subcontracted(self):
 		item_code = "_Test Subcontracted FG Item 1"
-		make_subcontracted_item(item_code)
+		make_subcontracted_item(item_code=item_code)
 
 		po = create_purchase_order(item_code=item_code, qty=1,
 			is_subcontracted="Yes", supplier_warehouse="_Test Warehouse 1 - _TC", include_exploded_items=1)
@@ -708,7 +710,7 @@ class TestPurchaseOrder(unittest.TestCase):
 
 	def test_backflush_based_on_stock_entry(self):
 		item_code = "_Test Subcontracted FG Item 1"
-		make_subcontracted_item(item_code)
+		make_subcontracted_item(item_code=item_code)
 		make_item('Sub Contracted Raw Material 1', {
 			'is_stock_item': 1,
 			'is_sub_contracted_item': 1
@@ -767,6 +769,129 @@ class TestPurchaseOrder(unittest.TestCase):
 
 		update_backflush_based_on("BOM")
 
+	def test_backflushed_based_on_for_multiple_batches(self):
+		item_code = "_Test Subcontracted FG Item 2"
+		make_item('Sub Contracted Raw Material 2', {
+			'is_stock_item': 1,
+			'is_sub_contracted_item': 1
+		})
+
+		make_subcontracted_item(item_code=item_code, has_batch_no=1, create_new_batch=1,
+			raw_materials=["Sub Contracted Raw Material 2"])
+
+		update_backflush_based_on("Material Transferred for Subcontract")
+
+		order_qty = 500
+		po = create_purchase_order(item_code=item_code, qty=order_qty,
+			is_subcontracted="Yes", supplier_warehouse="_Test Warehouse 1 - _TC")
+
+		make_stock_entry(target="_Test Warehouse - _TC",
+			item_code = "Sub Contracted Raw Material 2", qty=552, basic_rate=100)
+
+		rm_items = [
+			{"item_code":item_code,"rm_item_code":"Sub Contracted Raw Material 2","item_name":"_Test Item",
+				"qty":552,"warehouse":"_Test Warehouse - _TC", "stock_uom":"Nos"}]
+
+		rm_item_string = json.dumps(rm_items)
+		se = frappe.get_doc(make_subcontract_transfer_entry(po.name, rm_item_string))
+		se.submit()
+
+		for batch in ["ABCD1", "ABCD2", "ABCD3", "ABCD4"]:
+			make_new_batch(batch_id=batch, item_code=item_code)
+
+		pr = make_purchase_receipt(po.name)
+
+		# partial receipt
+		pr.get('items')[0].qty = 30
+		pr.get('items')[0].batch_no = "ABCD1"
+
+		purchase_order = po.name
+		purchase_order_item = po.items[0].name
+
+		for batch_no, qty in {"ABCD2": 60, "ABCD3": 70, "ABCD4":40}.items():
+			pr.append("items", {
+				"item_code": pr.get('items')[0].item_code,
+				"item_name": pr.get('items')[0].item_name,
+				"uom": pr.get('items')[0].uom,
+				"stock_uom": pr.get('items')[0].stock_uom,
+				"warehouse": pr.get('items')[0].warehouse,
+				"conversion_factor": pr.get('items')[0].conversion_factor,
+				"cost_center": pr.get('items')[0].cost_center,
+				"rate": pr.get('items')[0].rate,
+				"qty": qty,
+				"batch_no": batch_no,
+				"purchase_order": purchase_order,
+				"purchase_order_item": purchase_order_item
+			})
+
+		pr.submit()
+
+		pr1 = make_purchase_receipt(po.name)
+		pr1.get('items')[0].qty = 300
+		pr1.get('items')[0].batch_no = "ABCD1"
+		pr1.save()
+
+		pr_key = ("Sub Contracted Raw Material 2", po.name)
+		consumed_qty = get_backflushed_subcontracted_raw_materials([po.name]).get(pr_key)
+
+		self.assertTrue(pr1.supplied_items[0].consumed_qty > 0)
+		self.assertTrue(pr1.supplied_items[0].consumed_qty,  flt(552.0) - flt(consumed_qty))
+
+		update_backflush_based_on("BOM")
+
+	def test_supplied_qty_against_subcontracted_po(self):
+		item_code = "_Test Subcontracted FG Item 5"
+		make_item('Sub Contracted Raw Material 4', {
+			'is_stock_item': 1,
+			'is_sub_contracted_item': 1
+		})
+
+		make_subcontracted_item(item_code=item_code, raw_materials=["Sub Contracted Raw Material 4"])
+
+		update_backflush_based_on("Material Transferred for Subcontract")
+
+		order_qty = 250
+		po = create_purchase_order(item_code=item_code, qty=order_qty,
+			is_subcontracted="Yes", supplier_warehouse="_Test Warehouse 1 - _TC", do_not_save=True)
+
+		# Add same subcontracted items multiple times
+		po.append("items", {
+			"item_code": item_code,
+			"qty": order_qty,
+			"schedule_date": add_days(nowdate(), 1),
+			"warehouse": "_Test Warehouse - _TC"
+		})
+
+		po.set_missing_values()
+		po.submit()
+
+		# Material receipt entry for the raw materials which will be send to supplier
+		make_stock_entry(target="_Test Warehouse - _TC",
+			item_code = "Sub Contracted Raw Material 4", qty=500, basic_rate=100)
+
+		rm_items = [
+			{
+				"item_code":item_code,"rm_item_code":"Sub Contracted Raw Material 4","item_name":"_Test Item",
+				"qty":250,"warehouse":"_Test Warehouse - _TC", "stock_uom":"Nos", "name": po.supplied_items[0].name
+			},
+			{
+				"item_code":item_code,"rm_item_code":"Sub Contracted Raw Material 4","item_name":"_Test Item",
+				"qty":250,"warehouse":"_Test Warehouse - _TC", "stock_uom":"Nos", "name": po.supplied_items[1].name
+			},
+		]
+
+		# Raw Materials transfer entry from stores to supplier's warehouse
+		rm_item_string = json.dumps(rm_items)
+		se = frappe.get_doc(make_subcontract_transfer_entry(po.name, rm_item_string))
+		se.submit()
+
+		po_doc = frappe.get_doc("Purchase Order", po.name)
+		for row in po_doc.supplied_items:
+			# Valid that whether transferred quantity is matching with supplied qty or not in the purchase order
+			self.assertEqual(row.supplied_qty, 250.0)
+
+		update_backflush_based_on("BOM")
+
 	def test_advance_payment_entry_unlink_against_purchase_order(self):
 		from erpnext.accounts.doctype.payment_entry.test_payment_entry import get_payment_entry
 		frappe.db.set_value("Accounts Settings", "Accounts Settings",
@@ -839,15 +964,19 @@ def make_pr_against_po(po, received_qty=0):
 	pr.submit()
 	return pr
 
-def make_subcontracted_item(item_code):
+def make_subcontracted_item(**args):
 	from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
 
-	if not frappe.db.exists('Item', item_code):
+	args = frappe._dict(args)
-		make_item(item_code, {
+
+	if not frappe.db.exists('Item', args.item_code):
+		make_item(args.item_code, {
 			'is_stock_item': 1,
-			'is_sub_contracted_item': 1
+			'is_sub_contracted_item': 1,
+			'has_batch_no': args.get("has_batch_no") or 0
 		})
 
+	if not args.raw_materials:
 		if not frappe.db.exists('Item', "Test Extra Item 1"):
 			make_item("Test Extra Item 1", {
 				'is_stock_item': 1,
@@ -858,8 +987,10 @@ def make_subcontracted_item(item_code):
 				'is_stock_item': 1,
 			})
 
-	if not frappe.db.get_value('BOM', {'item': item_code}, 'name'):
+		args.raw_materials = ['_Test FG Item', 'Test Extra Item 1']
-		make_bom(item = item_code, raw_materials = ['_Test FG Item', 'Test Extra Item 1'])
+
+	if not frappe.db.get_value('BOM', {'item': args.item_code}, 'name'):
+		make_bom(item = args.item_code, raw_materials = args.get("raw_materials"))
 
 def update_backflush_based_on(based_on):
 	doc = frappe.get_doc('Buying Settings')

erpnext/controllers/buying_controller.py

@@ -5,7 +5,7 @@ from __future__ import unicode_literals
 import frappe
 from frappe import _, msgprint
 from frappe.utils import flt,cint, cstr, getdate
-
+from six import iteritems
 from erpnext.accounts.party import get_party_details
 from erpnext.stock.get_item_details import get_conversion_factor
 from erpnext.buying.utils import validate_for_items, update_last_purchase_rate
@@ -112,8 +112,8 @@ class BuyingController(StockController):
 			"docstatus": 1
 		})]
 		if self.is_return and len(not_cancelled_asset):
-			frappe.throw(_("{} has submitted assets linked to it. You need to cancel the assets to create purchase return.".format(self.return_against)),
+			frappe.throw(_("{} has submitted assets linked to it. You need to cancel the assets to create purchase return.")
-				title=_("Not Allowed"))
+				.format(self.return_against), title=_("Not Allowed"))
 
 	def get_asset_items(self):
 		if self.doctype not in ['Purchase Order', 'Purchase Invoice', 'Purchase Receipt']:
@@ -298,10 +298,10 @@ class BuyingController(StockController):
 					title=_("Limit Crossed"))
 
 			transferred_batch_qty_map = get_transferred_batch_qty_map(item.purchase_order, item.item_code)
-			backflushed_batch_qty_map = get_backflushed_batch_qty_map(item.purchase_order, item.item_code)
+			# backflushed_batch_qty_map = get_backflushed_batch_qty_map(item.purchase_order, item.item_code)
 
 			for raw_material in transferred_raw_materials + non_stock_items:
-				rm_item_key = '{}{}'.format(raw_material.rm_item_code, item.purchase_order)
+				rm_item_key = (raw_material.rm_item_code, item.purchase_order)
 				raw_material_data = backflushed_raw_materials_map.get(rm_item_key, {})
 
 				consumed_qty = raw_material_data.get('qty', 0)
@@ -330,8 +330,10 @@ class BuyingController(StockController):
 					set_serial_nos(raw_material, consumed_serial_nos, qty)
 
 				if raw_material.batch_nos:
+					backflushed_batch_qty_map = raw_material_data.get('consumed_batch', {})
+
 					batches_qty = get_batches_with_qty(raw_material.rm_item_code, raw_material.main_item_code,
-						qty, transferred_batch_qty_map, backflushed_batch_qty_map)
+						qty, transferred_batch_qty_map, backflushed_batch_qty_map, item.purchase_order)
 					for batch_data in batches_qty:
 						qty = batch_data['qty']
 						raw_material.batch_no = batch_data['batch']
@@ -343,6 +345,10 @@ class BuyingController(StockController):
 		rm = self.append('supplied_items', {})
 		rm.update(raw_material_data)
 
+		if not rm.main_item_code:
+			rm.main_item_code = fg_item_doc.item_code
+
+		rm.reference_name = fg_item_doc.name
 		rm.required_qty = qty
 		rm.consumed_qty = qty
 
@@ -792,8 +798,8 @@ class BuyingController(StockController):
 							asset.set(field, None)
 							asset.supplier = None
 						if asset.docstatus == 1 and delete_asset:
-							frappe.throw(_('Cannot cancel this document as it is linked with submitted asset {0}.\
+							frappe.throw(_('Cannot cancel this document as it is linked with submitted asset {0}. Please cancel it to continue.')
-								Please cancel the it to continue.').format(frappe.utils.get_link_to_form('Asset', asset.name)))
+								.format(frappe.utils.get_link_to_form('Asset', asset.name)))
 
 					asset.flags.ignore_validate_update_after_submit = True
 					asset.flags.ignore_mandatory = True
@@ -873,7 +879,7 @@ def get_subcontracted_raw_materials_from_se(purchase_order, fg_item):
 			AND se.purpose='Send to Subcontractor'
 			AND se.purchase_order = %s
 			AND IFNULL(sed.t_warehouse, '') != ''
-			AND sed.subcontracted_item = %s
+			AND IFNULL(sed.subcontracted_item, '') in ('', %s)
 		GROUP BY sed.item_code, sed.subcontracted_item
 	"""
 	raw_materials = frappe.db.multisql({
@@ -890,39 +896,49 @@ def get_subcontracted_raw_materials_from_se(purchase_order, fg_item):
 	return raw_materials
 
 def get_backflushed_subcontracted_raw_materials(purchase_orders):
-	common_query = """
+	purchase_receipts = frappe.get_all("Purchase Receipt Item",
-		SELECT
+		fields = ["purchase_order", "item_code", "name", "parent"],
-			CONCAT(prsi.rm_item_code, pri.purchase_order) AS item_key,
+		filters={"docstatus": 1, "purchase_order": ("in", list(purchase_orders))})
-			SUM(prsi.consumed_qty) AS qty,
-			{serial_no_concat_syntax} AS serial_nos,
-			{batch_no_concat_syntax} AS batch_nos
-		FROM `tabPurchase Receipt` pr, `tabPurchase Receipt Item` pri, `tabPurchase Receipt Item Supplied` prsi
-		WHERE
-			pr.name = pri.parent
-			AND pr.name = prsi.parent
-			AND pri.purchase_order IN %s
-			AND pri.item_code = prsi.main_item_code
-			AND pr.docstatus = 1
-		GROUP BY prsi.rm_item_code, pri.purchase_order
-	"""
 
-	backflushed_raw_materials = frappe.db.multisql({
+	distinct_purchase_receipts = {}
-		'mariadb': common_query.format(
+	for pr in purchase_receipts:
-			serial_no_concat_syntax="GROUP_CONCAT(prsi.serial_no)",
+		key = (pr.purchase_order, pr.item_code, pr.parent)
-			batch_no_concat_syntax="GROUP_CONCAT(prsi.batch_no)"
+		distinct_purchase_receipts.setdefault(key, []).append(pr.name)
-		),
-		'postgres': common_query.format(
-			serial_no_concat_syntax="STRING_AGG(prsi.serial_no, ',')",
-			batch_no_concat_syntax="STRING_AGG(prsi.batch_no, ',')"
-		)
-	}, (purchase_orders, ), as_dict=1)
 
 	backflushed_raw_materials_map = frappe._dict()
-	for item in backflushed_raw_materials:
+	for args, references in iteritems(distinct_purchase_receipts):
-		backflushed_raw_materials_map.setdefault(item.item_key, item)
+		purchase_receipt_supplied_items = get_supplied_items(args[1], args[2], references)
+
+		for data in purchase_receipt_supplied_items:
+			pr_key = (data.rm_item_code, args[0])
+			if pr_key not in backflushed_raw_materials_map:
+				backflushed_raw_materials_map.setdefault(pr_key, frappe._dict({
+					"qty": 0.0,
+					"serial_no": [],
+					"batch_no": [],
+					"consumed_batch": {}
+				}))
+
+			row = backflushed_raw_materials_map.get(pr_key)
+			row.qty += data.consumed_qty
+
+			for field in ["serial_no", "batch_no"]:
+				if data.get(field):
+					row[field].append(data.get(field))
+
+			if data.get("batch_no"):
+				if data.get("batch_no") in row.consumed_batch:
+					row.consumed_batch[data.get("batch_no")] += data.consumed_qty
+				else:
+					row.consumed_batch[data.get("batch_no")] = data.consumed_qty
 
 	return backflushed_raw_materials_map
 
+def get_supplied_items(item_code, purchase_receipt, references):
+	return frappe.get_all("Purchase Receipt Item Supplied",
+		fields=["rm_item_code", "consumed_qty", "serial_no", "batch_no"],
+		filters={"main_item_code": item_code, "parent": purchase_receipt, "reference_name": ("in", references)})
+
 def get_asset_item_details(asset_items):
 	asset_items_data = {}
 	for d in frappe.get_all('Item', fields = ["name", "auto_create_assets", "asset_naming_series"],
@@ -1004,14 +1020,15 @@ def get_transferred_batch_qty_map(purchase_order, fg_item):
 		SELECT
 			sed.batch_no,
 			SUM(sed.qty) AS qty,
-			sed.item_code
+			sed.item_code,
+			sed.subcontracted_item
 		FROM `tabStock Entry` se,`tabStock Entry Detail` sed
 		WHERE
 			se.name = sed.parent
 			AND se.docstatus=1
 			AND se.purpose='Send to Subcontractor'
 			AND se.purchase_order = %s
-			AND sed.subcontracted_item = %s
+			AND ifnull(sed.subcontracted_item, '') in ('', %s)
 			AND sed.batch_no IS NOT NULL
 		GROUP BY
 			sed.batch_no,
@@ -1019,8 +1036,10 @@ def get_transferred_batch_qty_map(purchase_order, fg_item):
 	""", (purchase_order, fg_item), as_dict=1)
 
 	for batch_data in transferred_batches:
-		transferred_batch_qty_map.setdefault((batch_data.item_code, fg_item), {})
+		key = ((batch_data.item_code, fg_item)
-		transferred_batch_qty_map[(batch_data.item_code, fg_item)][batch_data.batch_no] = batch_data.qty
+			if batch_data.subcontracted_item else (batch_data.item_code, purchase_order))
+		transferred_batch_qty_map.setdefault(key, {})
+		transferred_batch_qty_map[key][batch_data.batch_no] = batch_data.qty
 
 	return transferred_batch_qty_map
 
@@ -1057,10 +1076,11 @@ def get_backflushed_batch_qty_map(purchase_order, fg_item):
 
 	return backflushed_batch_qty_map
 
-def get_batches_with_qty(item_code, fg_item, required_qty, transferred_batch_qty_map, backflushed_batch_qty_map):
+def get_batches_with_qty(item_code, fg_item, required_qty, transferred_batch_qty_map, backflushed_batches, po):
 	# Returns available batches to be backflushed based on requirements
 	transferred_batches = transferred_batch_qty_map.get((item_code, fg_item), {})
-	backflushed_batches = backflushed_batch_qty_map.get((item_code, fg_item), {})
+	if not transferred_batches:
+		transferred_batches = transferred_batch_qty_map.get((item_code, po), {})
 
 	available_batches = []
 

erpnext/selling/doctype/sales_order/test_sales_order.py

@@ -441,6 +441,7 @@ class TestSalesOrder(unittest.TestCase):
 	def test_update_child_qty_rate_with_workflow(self):
 		from frappe.model.workflow import apply_workflow
 
+		frappe.set_user("Administrator")
 		workflow = make_sales_order_workflow()
 		so = make_sales_order(item_code= "_Test Item", qty=1, rate=150, do_not_submit=1)
 		apply_workflow(so, 'Approve')

erpnext/stock/doctype/batch/test_batch.py

@@ -256,3 +256,18 @@ class TestBatch(unittest.TestCase):
 			batch.insert()
 
 		return batch
+
+def make_new_batch(**args):
+	args = frappe._dict(args)
+
+	try:
+		batch = frappe.get_doc({
+			"doctype": "Batch",
+			"batch_id": args.batch_id,
+			"item": args.item_code,
+		}).insert()
+
+	except frappe.DuplicateEntryError:
+		batch = frappe.get_doc("Batch", args.batch_id)
+
+	return batch

erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py

@@ -174,7 +174,7 @@ class TestPurchaseReceipt(unittest.TestCase):
 
 		update_backflush_based_on("Material Transferred for Subcontract")
 		item_code = "_Test Subcontracted FG Item 1"
-		make_subcontracted_item(item_code)
+		make_subcontracted_item(item_code=item_code)
 
 		po = create_purchase_order(item_code=item_code, qty=1,
 			is_subcontracted="Yes", supplier_warehouse="_Test Warehouse 1 - _TC")
@@ -717,6 +717,66 @@ class TestPurchaseReceipt(unittest.TestCase):
 		# Allowed to submit for other company's PR
 		self.assertEqual(pr.docstatus, 1)
 
+	def test_subcontracted_pr_for_multi_transfer_batches(self):
+		from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+		from erpnext.buying.doctype.purchase_order.purchase_order import make_rm_stock_entry, make_purchase_receipt
+		from erpnext.buying.doctype.purchase_order.test_purchase_order import (update_backflush_based_on,
+			create_purchase_order)
+
+		update_backflush_based_on("Material Transferred for Subcontract")
+		item_code = "_Test Subcontracted FG Item 3"
+
+		make_item('Sub Contracted Raw Material 3', {
+			'is_stock_item': 1,
+			'is_sub_contracted_item': 1,
+			'has_batch_no': 1,
+			'create_new_batch': 1
+		})
+
+		create_subcontracted_item(item_code=item_code, has_batch_no=1,
+			raw_materials=["Sub Contracted Raw Material 3"])
+
+		order_qty = 500
+		po = create_purchase_order(item_code=item_code, qty=order_qty,
+			is_subcontracted="Yes", supplier_warehouse="_Test Warehouse 1 - _TC")
+
+		ste1=make_stock_entry(target="_Test Warehouse - _TC",
+			item_code = "Sub Contracted Raw Material 3", qty=300, basic_rate=100)
+		ste2=make_stock_entry(target="_Test Warehouse - _TC",
+			item_code = "Sub Contracted Raw Material 3", qty=200, basic_rate=100)
+
+		transferred_batch = {
+			ste1.items[0].batch_no : 300,
+			ste2.items[0].batch_no : 200
+		}
+
+		rm_items = [
+			{"item_code":item_code,"rm_item_code":"Sub Contracted Raw Material 3","item_name":"_Test Item",
+				"qty":300,"warehouse":"_Test Warehouse - _TC", "stock_uom":"Nos", "name": po.supplied_items[0].name},
+			{"item_code":item_code,"rm_item_code":"Sub Contracted Raw Material 3","item_name":"_Test Item",
+				"qty":200,"warehouse":"_Test Warehouse - _TC", "stock_uom":"Nos", "name": po.supplied_items[0].name}
+		]
+
+		rm_item_string = json.dumps(rm_items)
+		se = frappe.get_doc(make_rm_stock_entry(po.name, rm_item_string))
+		self.assertEqual(len(se.items), 2)
+		se.items[0].batch_no = ste1.items[0].batch_no
+		se.items[1].batch_no = ste2.items[0].batch_no
+		se.submit()
+
+		supplied_qty = frappe.db.get_value("Purchase Order Item Supplied",
+			{"parent": po.name, "rm_item_code": "Sub Contracted Raw Material 3"}, "supplied_qty")
+
+		self.assertEqual(supplied_qty, 500.00)
+
+		pr = make_purchase_receipt(po.name)
+		pr.save()
+		self.assertEqual(len(pr.supplied_items), 2)
+
+		for row in pr.supplied_items:
+			self.assertEqual(transferred_batch.get(row.batch_no), row.consumed_qty)
+
+		update_backflush_based_on("BOM")
 
 def get_sl_entries(voucher_type, voucher_no):
 	return frappe.db.sql(""" select actual_qty, warehouse, stock_value_difference
@@ -858,6 +918,33 @@ def make_purchase_receipt(**args):
 			pr.submit()
 	return pr
 
+def create_subcontracted_item(**args):
+	from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
+
+	args = frappe._dict(args)
+
+	if not frappe.db.exists('Item', args.item_code):
+		make_item(args.item_code, {
+			'is_stock_item': 1,
+			'is_sub_contracted_item': 1,
+			'has_batch_no': args.get("has_batch_no") or 0
+		})
+
+	if not args.raw_materials:
+		if not frappe.db.exists('Item', "Test Extra Item 1"):
+			make_item("Test Extra Item 1", {
+				'is_stock_item': 1,
+			})
+
+		if not frappe.db.exists('Item', "Test Extra Item 2"):
+			make_item("Test Extra Item 2", {
+				'is_stock_item': 1,
+			})
+
+		args.raw_materials = ['_Test FG Item', 'Test Extra Item 1']
+
+	if not frappe.db.get_value('BOM', {'item': args.item_code}, 'name'):
+		make_bom(item = args.item_code, raw_materials = args.get("raw_materials"))
 
 test_dependencies = ["BOM", "Item Price", "Location"]
 test_records = frappe.get_test_records('Purchase Receipt')

erpnext/stock/doctype/serial_no/serial_no.py

@@ -343,10 +343,11 @@ def validate_material_transfer_entry(sle_doc):
 
 def validate_so_serial_no(sr, sales_order):
 	if not sr.sales_order or sr.sales_order!= sales_order:
-		msg = _("Sales Order {0} has reservation for item {1}")
+		msg = (_("Sales Order {0} has reservation for the item {1}, you can only deliver reserved {1} against {0}.")
-		msg += _(", you can only deliver reserved {1} against {0}.")
+			.format(sales_order, sr.item_code))
-		msg += _(" Serial No {2} cannot be delivered")
+
-		frappe.throw(msg.format(sales_order, sr.item_code, sr.name))
+		frappe.throw(_("""{0} Serial No {1} cannot be delivered""")
+			.format(msg, sr.name))
 
 def has_duplicate_serial_no(sn, sle):
 	if (sn.warehouse and not sle.skip_serial_no_validaiton
@@ -449,6 +450,9 @@ def get_item_details(item_code):
 		from tabItem where name=%s""", item_code, as_dict=True)[0]
 
 def get_serial_nos(serial_no):
+	if isinstance(serial_no, list):
+		return serial_no
+
 	return [s.strip() for s in cstr(serial_no).strip().upper().replace(',', '\n').split('\n')
 		if s.strip()]
 

erpnext/stock/doctype/stock_entry/stock_entry.py

@@ -571,8 +571,9 @@ class StockEntry(StockController):
 		qty_allowance = flt(frappe.db.get_single_value("Buying Settings",
 			"over_transfer_allowance"))
 
-		if (self.purpose == "Send to Subcontractor" and self.purchase_order and
+		if not (self.purpose == "Send to Subcontractor" and self.purchase_order): return
-			backflush_raw_materials_based_on == 'BOM'):
+
+		if (backflush_raw_materials_based_on == 'BOM'):
 			purchase_order = frappe.get_doc("Purchase Order", self.purchase_order)
 			for se_item in self.items:
 				item_code = se_item.original_item or se_item.item_code
@@ -609,6 +610,11 @@ class StockEntry(StockController):
 				if flt(total_supplied, precision) > flt(total_allowed, precision):
 					frappe.throw(_("Row {0}# Item {1} cannot be transferred more than {2} against Purchase Order {3}")
 						.format(se_item.idx, se_item.item_code, total_allowed, self.purchase_order))
+		elif backflush_raw_materials_based_on == "Material Transferred for Subcontract":
+			for row in self.items:
+				if not row.subcontracted_item:
+					frappe.throw(_("Row {0}: Subcontracted Item is mandatory for the raw material {1}")
+						.format(row.idx, frappe.bold(row.item_code)))
 
 	def validate_bom(self):
 		for d in self.get('items'):
@@ -817,6 +823,13 @@ class StockEntry(StockController):
 			ret.get('has_batch_no') and not args.get('batch_no')):
 			args.batch_no = get_batch_no(args['item_code'], args['s_warehouse'], args['qty'])
 
+		if self.purpose == "Send to Subcontractor" and self.get("purchase_order") and args.get('item_code'):
+			subcontract_items = frappe.get_all("Purchase Order Item Supplied",
+				{"parent": self.purchase_order, "rm_item_code": args.get('item_code')}, "main_item_code")
+
+			if subcontract_items and len(subcontract_items) == 1:
+				ret["subcontracted_item"] = subcontract_items[0].main_item_code
+
 		return ret
 
 	def set_items_for_stock_in(self):
@@ -1288,9 +1301,16 @@ class StockEntry(StockController):
 		#Update Supplied Qty in PO Supplied Items
 
 		frappe.db.sql("""UPDATE `tabPurchase Order Item Supplied` pos
-			SET pos.supplied_qty = (SELECT ifnull(sum(transfer_qty), 0) FROM `tabStock Entry Detail` sed
+			SET
-			WHERE pos.name = sed.po_detail and sed.docstatus = 1)
+				pos.supplied_qty = IFNULL((SELECT ifnull(sum(transfer_qty), 0)
-			WHERE pos.docstatus = 1 and pos.parent = %s""", self.purchase_order)
+					FROM
+						`tabStock Entry Detail` sed, `tabStock Entry` se
+					WHERE
+						pos.name = sed.po_detail AND pos.rm_item_code = sed.item_code
+						AND pos.parent = se.purchase_order AND sed.docstatus = 1
+						AND se.name = sed.parent and se.purchase_order = %(po)s
+				), 0)
+			WHERE pos.docstatus = 1 and pos.parent = %(po)s""", {"po": self.purchase_order})
 
 		#Update reserved sub contracted quantity in bin based on Supplied Item Details and
 		for d in self.get("items"):

erpnext/stock/doctype/stock_entry_detail/stock_entry_detail.json

@@ -1,5 +1,4 @@
 {
- "actions": [],
  "autoname": "hash",
  "creation": "2013-03-29 18:22:12",
  "doctype": "DocType",
@@ -16,6 +15,7 @@
   "item_code",
   "col_break2",
   "item_name",
+  "subcontracted_item",
   "section_break_8",
   "description",
   "column_break_10",
@@ -57,7 +57,6 @@
   "material_request",
   "material_request_item",
   "original_item",
-  "subcontracted_item",
   "reference_section",
   "against_stock_entry",
   "ste_detail",
@@ -415,6 +414,7 @@
    "read_only": 1
   },
   {
+   "depends_on": "eval:parent.purpose == 'Send to Subcontractor'",
    "fieldname": "subcontracted_item",
    "fieldtype": "Link",
    "label": "Subcontracted Item",
@@ -504,7 +504,7 @@
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2020-09-22 17:55:03.384138",
+ "modified": "2020-09-23 17:55:03.384138",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Stock Entry Detail",