diff --git a/erpnext/accounts/doctype/payment_order/payment_order.js b/erpnext/accounts/doctype/payment_order/payment_order.js
index aa373bc..9074def 100644
--- a/erpnext/accounts/doctype/payment_order/payment_order.js
+++ b/erpnext/accounts/doctype/payment_order/payment_order.js
@@ -10,6 +10,9 @@
 				}
 			}
 		});
+
+		frm.set_df_property('references', 'cannot_add_rows', true);
+		frm.set_df_property('references', 'cannot_delete_rows', true);
 	},
 	refresh: function(frm) {
 		if (frm.doc.docstatus == 0) {