No, the FIRS e-lnvoice System does not allow the cancellation of an already-issued e-lnvoice. Once an e-lnvoice is issued, it is permanently recorded in the system to maintain integrity and transparency.
However, if adjustments are needed (e.g., due to errors, changes in the transaction, or partial refunds), you can issue either a credit note or a debit note to reflect the required changes.