Consolidated value

Ganga Sundaram (172 Points)

15 October 2018  
when writing consolidated value in GSTR 3B, 3.1 (a) column I forgot to write the B2C value for the month of July 2017. But I have mentioned the details in B2C column in same return, In GSTR 1 also I have entered the details. we have paid the tax also for the B2C invoices. But that amount is showing in our cash credit ledger. How we can revtify this error ? please help me