For vendor invoice matching, can we use e-invoices in MyInvois portal or must use original invoices from principal? If e-invoices & principal’s invoices not match, what is the treatment?

It is the responsibility of the Supplier to ensure the Paper Invoice issued is tally with e-Invoice.  However, it is recommended to recognize e-Invoice as a legitimate Invoice once the e-Invoice has been fully implemented.  Branch to check the e-Invoice vs Hard Copy invoice and report to HQ for any discrepancy between a normal invoice and e-Invoice.