GSTR1 filing issue for ISD Invoices in B2B

Solution steps:-

Manual entry:-One possible workaround is to manually enter the details of ISD invoices in the GSTR1 return. This can be done by adding the ISD invoices as "B2B' invoices in the GSTR1 template and then manually calculating the tax liability.

Contact GST support:- If manual entry is not feasible or if there are a large number of ISD invoices, it may be necessary to contact the GST support team for assistance. 

Software Update: - If you are using accounting software to generate the JSON file, check if there is an update available that can handle ISD invoices correctly. 

ISD invoices in GSTR-1:

• ISD distributions are reported in GSTR-6 (by the ISD), not GSTR-1. The recipients see the credit in GSTR-6A and their 2B. Don't report ISD distribution invoices in GSTR-1's B2B table.

• If you're cross-charging (a supply between distinct persons), that's a normal B2B invoice in GSTR-1, and e-invoicing applies if you're covered.

GSTR-1 JSON generation can fail if an ISD document is entered in the regular B2B sheet. ISD credit distribution is reported in GSTR-6, not as a supplier’s B2B invoice in GSTR-1. If you are filing GSTR-1 as the supplier, remove the ISD entry from the B2B sheet and report the underlying supply under the applicable GSTR-1 table. An IRN is generally relevant only where e-invoicing applies; its absence alone may not explain the JSON error.

Check the utility’s error report for the exact validation message and confirm you are using the correct, current offline utility and template. If this is an ISD’s own outward supply rather than an ISD credit-distribution document, the reporting treatment may differ.

Correct classification at source makes GSTR-1 validation and reconciliation more reliable. Manual spreadsheet checks and repeated JSON attempts are difficult; automation can reduce repetitive work while keeping classification and filing decisions under professional judgment. At Jir AI, our 2,000+ AI agents and 650+ integrations streamline GST, ITR, TDS, TCS and other compliance workflows, helping reduce manual workload by up to 70%. For a practical look at streamlining these workflows, connect with us on WhatsApp: https://wa.me/message/3HVOZ7HIY4ESC1