Why it happens
- The original invoice hasn't been uploaded yet.
- The original invoice number is mistyped.
How to fix it
- Upload the original invoice first, then the credit/debit note.
- Check the original invoice number on the note.
This error is reported in: cdnr.
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.