Wrong e-Invoice Credit Note

Sir our customer GST number was not mentioned in invoice on 12/07/23 and customer has pointed it now, how we can correct the error and customer becomes eligible to receive the reimbursement.

reg

Sir our customer GST number was not mentioned in invoice on 12/07/23 and customer has pointed it now, how we can correct the error and customer becomes eligible to receive the reimbursement.

reg