diff --git a/erpnext/accounts/doctype/payment_request/payment_request.js b/erpnext/accounts/doctype/payment_request/payment_request.js
index ef930d0..2fce7dd 100644
--- a/erpnext/accounts/doctype/payment_request/payment_request.js
+++ b/erpnext/accounts/doctype/payment_request/payment_request.js
@@ -54,7 +54,7 @@
 	frm.toggle_reqd("payment_gateway_account", frm.doc.is_a_subscription);
 	frm.toggle_reqd("subscription_plans", frm.doc.is_a_subscription);
 
-	if (frm.doc.is_a_subscription) {
+	if (frm.doc.is_a_subscription && frm.doc.reference_doctype && frm.doc.reference_name) {
 		frappe.call({
 			method: "erpnext.accounts.doctype.payment_request.payment_request.get_subscription_details",
 			args: {"reference_doctype": frm.doc.reference_doctype, "reference_name": frm.doc.reference_name},