Mismatch In GST registartion Detail between the party and the transaction for this resolution for GSTR-1 Filing

you can siply alter the entry and choose correct ledger, if the error still persist please use following steps:

1. Go to master and More details and check GST Registration History.

2. May be there be amendment in the GST Details, Not correct the GST Details if applicable and save it with applicable date.

3. Then go to Alter transaction and accept entry by pressing enter and

4. Now check GSTR-1 report .

Hope this will helped you

Yes, you need to recheck the GST detailes entered in the customer master with the party details screen during voucher entry and make them same.