Why it happens
- HSN summary rows generated without a rate.
How to fix it
- Add the rate to every HSN summary row and regenerate. (Automatic HSN summaries arrive with the HSN builders.)
This error is reported in: hsn.
Last checked 17 October 2026
Based on public write-ups of this portal error, not on GSTN's own documentation. If the portal's message differs from what's described here, trust the portal and ask your CA.