fix: Check if payment schedule exists
diff --git a/erpnext/public/js/controllers/transaction.js b/erpnext/public/js/controllers/transaction.js
index 9f1ea19..121e9d0 100644
--- a/erpnext/public/js/controllers/transaction.js
+++ b/erpnext/public/js/controllers/transaction.js
@@ -1379,7 +1379,7 @@
 
 	update_payment_schedule_grid_labels: function(company_currency) {
 		const me = this;
-		if (this.frm.doc.payment_schedule.length > 0) {
+		if (this.frm.doc.payment_schedule && this.frm.doc.payment_schedule.length > 0) {
 			this.frm.set_currency_labels(["base_payment_amount", "base_outstanding", "base_paid_amount"],
 				company_currency, "payment_schedule");
 			this.frm.set_currency_labels(["payment_amount", "outstanding", "paid_amount"],