diff --git a/erpnext/manufacturing/doctype/production_plan/production_plan.py b/erpnext/manufacturing/doctype/production_plan/production_plan.py
index b2bc21f..088089f 100644
--- a/erpnext/manufacturing/doctype/production_plan/production_plan.py
+++ b/erpnext/manufacturing/doctype/production_plan/production_plan.py
@@ -201,6 +201,7 @@
 				pi.sales_order = data.parent
 				pi.sales_order_item = data.name
 				pi.description = data.description
+				pi.item_reference = data.name
 				
 					
 			elif self.get_items_from == "Material Request":
diff --git a/erpnext/manufacturing/doctype/production_plan_item/production_plan_item.json b/erpnext/manufacturing/doctype/production_plan_item/production_plan_item.json
index 9ff1717..89ab7aa 100644
--- a/erpnext/manufacturing/doctype/production_plan_item/production_plan_item.json
+++ b/erpnext/manufacturing/doctype/production_plan_item/production_plan_item.json
@@ -27,7 +27,8 @@
   "column_break_19",
   "material_request",
   "material_request_item",
-  "product_bundle_item"
+  "product_bundle_item",
+  "item_reference"
  ],
  "fields": [
   {
@@ -206,12 +207,18 @@
    "options": "Item",
    "print_hide": 1,
    "read_only": 1
+  },
+  {
+   "fieldname": "item_reference",
+   "fieldtype": "Data",
+   "hidden": 1,
+   "label": "Item Reference"
   }
  ],
  "idx": 1,
  "istable": 1,
  "links": [],
- "modified": "2021-04-22 12:10:01.102440",
+ "modified": "2021-04-28 19:14:57.772123",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "Production Plan Item",
diff --git a/erpnext/manufacturing/doctype/work_order/work_order.py b/erpnext/manufacturing/doctype/work_order/work_order.py
index 87d57ad..d77c46f 100644
--- a/erpnext/manufacturing/doctype/work_order/work_order.py
+++ b/erpnext/manufacturing/doctype/work_order/work_order.py
@@ -382,8 +382,10 @@
 
 		prod_plan = frappe.get_doc('Production Plan', self.production_plan)
 		pp_ref = prod_plan.prod_plan_ref
+		pp_item = frappe.get_doc('Production Plan Item', self.production_plan_item)
+		item_ref = pp_item.item_reference
 		for p in pp_ref:
-			if p.item_ref == self.production_plan_item:
+			if p.item_ref == item_ref:
 				work_order_qty = int(p.qty) if not cancel else 0
 				frappe.db.set_value('Sales Order Item',
 					p.sales_order_item, 'work_order_qty', flt(work_order_qty/total_bundle_qty, 2))