fix: 14th digit may not be zero
diff --git a/erpnext/regional/india/utils.py b/erpnext/regional/india/utils.py
index 5295605..9b7edc5 100644
--- a/erpnext/regional/india/utils.py
+++ b/erpnext/regional/india/utils.py
@@ -11,7 +11,7 @@
if doc.gstin:
doc.gstin = doc.gstin.upper()
if doc.gstin not in ["NA", "na"]:
- p = re.compile("[0-9]{2}[A-Z]{4}[0-9A-Z]{1}[0-9]{4}[A-Z]{1}[1-9A-Z]{1}[0-9A-Z]{1}[0-9A-Z]{1}")
+ p = re.compile("[0-9]{2}[A-Z]{4}[0-9A-Z]{1}[0-9]{4}[A-Z]{1}[1-9A-Z]{1}[1-9A-Z]{1}[0-9A-Z]{1}")
if not p.match(doc.gstin):
frappe.throw(_("Invalid GSTIN or Enter NA for Unregistered"))