diff --git a/erpnext/shopping_cart/cart.py b/erpnext/shopping_cart/cart.py
index 3c9f849..681d161 100644
--- a/erpnext/shopping_cart/cart.py
+++ b/erpnext/shopping_cart/cart.py
@@ -462,6 +462,9 @@
 		return customer
 
 def get_debtors_account(cart_settings):
+	if not cart_settings.payment_gateway_account:
+		frappe.throw(_("Payment Gateway Account not set"), _("Mandatory"))
+
 	payment_gateway_account_currency = \
 		frappe.get_doc("Payment Gateway Account", cart_settings.payment_gateway_account).currency