Tax Rate Difference

Hi Ravindra,
You can ask your client to issue a Debit note gor differential GST or ask him to raise credit note against this invoice and raise fresh invoice with correct gst.
Hope this clarifies, if more clarifications required please write mail at Bhavana @ lbkca.in.
Thanks
Bhavana K L
Chartered Accountant

Use debit note

But Both condition Taxable value is same

Ask your client to amend the invoice in gstr-1. Corresponding change will automatically reflect in GSTR-3B

Https://play.google.com/store/apps/details?id=com.si.gstcalculator

use the App - "GST Eagle" GST Interest and Late Fees Calculator. with Regular GST Updates.