diff --git a/erpnext/manufacturing/doctype/production_plan/services/sub_assembly.py b/erpnext/manufacturing/doctype/production_plan/services/sub_assembly.py
index 0f445d557ef..310fb3e2638 100644
--- a/erpnext/manufacturing/doctype/production_plan/services/sub_assembly.py
+++ b/erpnext/manufacturing/doctype/production_plan/services/sub_assembly.py
@@ -82,7 +82,7 @@ class SubAssemblyService:
 			frappe.throw(_("Row #{0}: Please select the BOM No in Assembly Items").format(row.idx))
 
 	def _warn_sufficient_sub_assembly(self):
-		label = self.meta.get_field("skip_available_sub_assembly_item").label
+		label = self.doc.meta.get_field("skip_available_sub_assembly_item").label
 		message = (
 			_(
 				"As there are sufficient Sub Assembly Items, Work Order is not required for Warehouse {0}."