diff --git a/erpnext/selling/doctype/party_specific_item/party_specific_item.py b/erpnext/selling/doctype/party_specific_item/party_specific_item.py
index 0aef7d362e4db017aea4702b156c2f1dbe9ab5d4..b903a339d83e855776fe49639ae403e2b3ce3b59 100644
--- a/erpnext/selling/doctype/party_specific_item/party_specific_item.py
+++ b/erpnext/selling/doctype/party_specific_item/party_specific_item.py
@@ -9,13 +9,13 @@ from frappe.model.document import Document
 class PartySpecificItem(Document):
 	def validate(self):
 		exists = frappe.db.exists(
+			"Party Specific Item",
 			{
-				"doctype": "Party Specific Item",
 				"party_type": self.party_type,
 				"party": self.party,
 				"restrict_based_on": self.restrict_based_on,
-				"based_on": self.based_on_value,
-			}
+				"based_on_value": self.based_on_value,
+			},
 		)
 		if exists:
 			frappe.throw(_("This item filter has already been applied for the {0}").format(self.party_type))