Update sales_invoice.py
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 6757e43..931ff8c 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -337,7 +337,7 @@
msgprint(_("Item Code required at Row No {0}").format(d.idx), raise_exception=True)
def validate_warehouse(self):
- for d in self.get('entries'):
+ for d in self.get('items'):
if not d.warehouse:
frappe.throw(_("Warehouse required at Row No {0}").format(d.idx))