RFD-01 related issue

Yes, that what happened in my case , I have paid the amount in Cess instead of SGST after that we have applied for refund (online process) after that (with in 15 days) you have to submit the copy of RFD-01 along with some documents to the state authority
we have done. just day before yesterday

which type of documents to show?

1) declaration
2) a letter to authority for refund
3) acknowledgement
4) RFD-01
5) REGISTRATION CERTIFICATE
6) CANCEL CHEQUE
7)GST R1 AND 3B FOR THE MONTH IN WHICH YOU HAVE MADE MISTAKE (LIKE IN MY CASE I HAVE PAID WRONG RETURN IN THE MONTH OF JANUARY SO I GAVE JAN GST 3B AND R1)
8) ELECTRONIC CASH LEDGER STATEMENT

ok thank you.

let me know if you need any other help

sure brother