diff --git a/erpnext/buying/doctype/purchase_order/test_purchase_order.py b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
index 0181ae78b4..d568ef1ced 100644
--- a/erpnext/buying/doctype/purchase_order/test_purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
@@ -876,7 +876,7 @@ class TestPurchaseOrder(unittest.TestCase):
 			},
 			{
 				"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
+				"qty":250,"warehouse":"_Test Warehouse - _TC", "stock_uom":"Nos"
 			},
 		]
 
@@ -885,6 +885,10 @@ class TestPurchaseOrder(unittest.TestCase):
 		se = frappe.get_doc(make_subcontract_transfer_entry(po.name, rm_item_string))
 		se.submit()
 
+		# Test po_detail field has value or not
+		for item_row in se.items:
+			self.assertEqual(item_row.po_detail, po.supplied_items[item_row.idx - 1].name)
+
 		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
diff --git a/erpnext/controllers/buying_controller.py b/erpnext/controllers/buying_controller.py
index f376836f7b..9ee83e3481 100644
--- a/erpnext/controllers/buying_controller.py
+++ b/erpnext/controllers/buying_controller.py
@@ -301,7 +301,7 @@ class BuyingController(StockController):
 			# 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 = (raw_material.rm_item_code, item.purchase_order)
+				rm_item_key = (raw_material.rm_item_code, item.item_code, item.purchase_order)
 				raw_material_data = backflushed_raw_materials_map.get(rm_item_key, {})
 
 				consumed_qty = raw_material_data.get('qty', 0)
@@ -910,7 +910,7 @@ def get_backflushed_subcontracted_raw_materials(purchase_orders):
 		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])
+			pr_key = (data.rm_item_code, data.main_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,
@@ -936,7 +936,7 @@ def get_backflushed_subcontracted_raw_materials(purchase_orders):
 
 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"],
+		fields=["rm_item_code", "main_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):
diff --git a/erpnext/stock/doctype/stock_entry/stock_entry.py b/erpnext/stock/doctype/stock_entry/stock_entry.py
index 4583c5174e..768526705c 100644
--- a/erpnext/stock/doctype/stock_entry/stock_entry.py
+++ b/erpnext/stock/doctype/stock_entry/stock_entry.py
@@ -615,6 +615,15 @@ class StockEntry(StockController):
 				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)))
+				elif not row.po_detail:
+					filters = {
+						"parent": self.purchase_order, "docstatus": 1,
+						"rm_item_code": row.item_code, "main_item_code": row.subcontracted_item
+					}
+
+					po_detail = frappe.db.get_value("Purchase Order Item Supplied", filters, "name")
+					if po_detail:
+						row.db_set("po_detail", po_detail)
 
 	def validate_bom(self):
 		for d in self.get('items'):