diff --git a/erpnext/patches/v12_0/set_purchase_receipt_delivery_note_detail.py b/erpnext/patches/v12_0/set_purchase_receipt_delivery_note_detail.py
index f5bd8c3aa29..6f843cdabd7 100644
--- a/erpnext/patches/v12_0/set_purchase_receipt_delivery_note_detail.py
+++ b/erpnext/patches/v12_0/set_purchase_receipt_delivery_note_detail.py
@@ -3,6 +3,10 @@ import frappe
 from collections import defaultdict
 
 def execute():
+
+	frappe.reload_doc('stock', 'doctype', 'delivery_note_item', force=True)
+	frappe.reload_doc('stock', 'doctype', 'purchase_receipt_item', force=True)
+
 	def map_rows(doc_row, return_doc_row, detail_field, doctype):
 		"""Map rows after identifying similar ones."""