Invoice Mistake

ssubramanyam subbus (59 Points)

04 May 2020  
ABC Pvt Ltd having register office at Karnataka, sold the goods to PQR Ltd, invoice was bill to Mumbai and goods ship to as Bangalore Branch Office, also discharged the IGST liability.
Now when the invoice has reached the Finance team of PQR Ltd they are requesting to revise invoice with bill to and ship to both as Bangalore address i.e charging SGST & CGST.

Can I rise a credit for Invoice billed to Mumbai ?
How to issue revised invoice to Bangalore?