CA Student
15932 Points
Joined May 2011
Well, first of all the supplier should have issued a credit note instead of issuing the same invoice with revised rates.
Now, in the given situation, for the excess input claimed by you, you have to pay the same through cash or reverse such over reported ITC with interest in the subsequent GSTR-3B.
Since, invoice details are not uploaded in GSTR-3B, and I believe that the supplier will upload only the revised rate invoice in his GSTR-1, the situation will be taken care of.
You may refer Circular No. 26/2017, dt. 29.12.2017.