First 2 digit validation would disregard NA values
diff --git a/erpnext/regional/india/utils.py b/erpnext/regional/india/utils.py
index 62de7a9..0bf1af5 100644
--- a/erpnext/regional/india/utils.py
+++ b/erpnext/regional/india/utils.py
@@ -17,7 +17,7 @@
if doc.state in states:
doc.gst_state = doc.state
- if doc.gst_state:
+ if doc.gst_state and doc.gstin != "NA":
doc.gst_state_number = state_numbers[doc.gst_state]
if doc.gst_state_number != doc.gstin[:2]:
frappe.throw(_("First 2 digits of GSTIN should match with State number {0}")