fix: Raise Error on over receipt/consumption for sub-contrcated PR
diff --git a/erpnext/controllers/buying_controller.py b/erpnext/controllers/buying_controller.py
index f982700..ac567b7 100644
--- a/erpnext/controllers/buying_controller.py
+++ b/erpnext/controllers/buying_controller.py
@@ -276,6 +276,9 @@
 		qty_to_be_received_map = get_qty_to_be_received(purchase_orders)
 
 		for item in self.get('items'):
+			if not item.purchase_order:
+				continue
+
 			# reset raw_material cost
 			item.rm_supp_cost = 0
 
@@ -288,6 +291,12 @@
 
 			fg_yet_to_be_received = qty_to_be_received_map.get(item_key)
 
+			if not fg_yet_to_be_received:
+				frappe.throw(_("Row #{0}: Item {1} is already fully received in Purchase Order {2}")
+					.format(item.idx, frappe.bold(item.item_code),
+						frappe.utils.get_link_to_form("Purchase Order", item.purchase_order)),
+					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)