regarding debit note against sale bill

Dear Sir,
Good evening

I want to ask one question regarding revise the Sales Tax Invoice.
We can't able to change Tax invoice of last month and we need to do changes in it. And we taken debit note for that too.
But how we can able to take GST set up for the same
Eg. Now have to increase prices of good in the invoice and I am generating the difference debit note.
Please help me with this issue.

Thanks.