Wrong GST Filled/ Cancelled invoice uploaded in return.

Correcting Wrong or Canceled Challan in GSTR-1 If you've uploaded a wrong or canceled challan while filling GSTR-1, you can take the following steps to correct the issue:

Steps to Correct the Issue 1. *Identify the Error*: Review your GSTR-1 filing and identify the incorrect or canceled challan.

2. *Amend GSTR-1*: You can amend your GSTR-1 filing to correct the error. However, the amendment can only be done before the due date of filing GSTR-1.

3. *File a Revised Return*: If the error is discovered after filing GSTR-1, you may need to file a revised return (GSTR-1) with the correct information.

 4. *Contact GST Help Desk*: If you're unable to correct the issue on your own, you can contact the GST help desk for assistance.

Additional Considerations - *GST Portal*: The GST portal may be used to file revised returns and make amendments to GSTR-1. -

*Documentation*: Maintain proper documentation, including records of the incorrect challan and any corrections made.

Correcting a wrong or cancelled invoice already uploaded in GSTR-1 requires using the amendment tables in the following month GSTR-1.

Here is how to do it, step by step:

For a wrong B2B invoice (wrong GSTIN, wrong amount, wrong tax rate):
In the NEXT month GSTR-1, go to Table 9A (Amended B2B Invoices). Select the original invoice from the list. Edit the incorrect fields. The portal will show the original entry and accept the corrected entry. This does not create a new invoice. It amends the existing one in the system.

For a cancelled invoice that was uploaded by mistake:
If you raised a credit note against it on your books, upload the credit note in Table 9B (Amended Credit and Debit Notes). Alternatively, if no credit note was raised, amend the invoice in Table 9A to bring the value to zero and add a note explaining the cancellation.

For wrong B2C invoices (unregistered buyers):
Use Table 9C (Amended B2C Large Invoices) for invoices above Rs 2.5 lakh to unregistered buyers. For smaller B2C invoices, amend the consolidated figure in Table 10.

Deadline to amend: Any amendment to FY 2025-26 invoices must be done by the GSTR-1 for September 2026 (filed by October 11, 2026) or before filing the GSTR-9 annual return, whichever is earlier. Do not miss this window.

For the full GSTR-1 filing process including amendment tables with screenshots, this [GSTR-1 filing guide](https://taxgarden.in/blog/gst-login-gstr-1-filing-step-by-step-guide-2026) covers each table.