Credit Note as per GST

Better to amend the invoice details & issue revised invoice to Your customer...

There is no provision of Revised Invoice in GST . Need to issue Credit or debit Note for any such Correction.

Yes. in case if invoice is issued is correct but not correctly declare & uploaded in return then you can ammend that invoice in your next Rerurn ,& no need to issue credit or debit Note

In Amendment table it's also ask/show revised invoice & revised invoice number...

As per sub-section (3)(a) of Section 31 of CGST Prescribes that Revised invoice can only be issue by Registered person within one month from the date of issuance of certificate of Registration against the , invoices already issued during the period begining with the effective date of registration till the date of issuance of certificate of Registration to him. Hence in GST there is NOconcept of Revised Invoice EXCEPT the condition mention above

Can You explain the amendment in GSTR 1 and how to it's details after amendment in any changes in invoice as per amendments...?

Amendent is not in Invoice issued . one cannot issue a revised invoice ., its only in invoice which are wrongly uploaded.

Its clearly prescribed in Section 34 any increase /decrease in invoice can be done by credit/debit note only.

Dear Raja ji

There is no concept of Revised invoice in GST except the condition i have mention above .
If you can reply me with quoting the section or Act i will be highly oblige & keen to update myself on same