If you've amended a GSTR-1 invoice in one period and need to make a further correction, the portal may prevent a second amendment. This is because the system flags it as already amended. To resolve this, you'll need to issue a credit or debit note to adjust the values. However, if the error is with the tax head (e.g., IGST vs. CGST/SGST), a credit/debit note alone won't fix it. You'll need to explore alternative methods to correct the tax classification and ensure the correct details appear on the recipient's GSTR-2A.
06 October 2021
Dear Expert, I showed one sale invoice of october and due to some mistake I amend it in November and I knew at a later stage that I made a mistake in amendment and now I want to Amend the same invoice second time then portal says already amended in previous tax period. Plz how to rectify this mistake and how the correct details will reflect in party GSTR-2A.