How should an already submitted e-invoice be corrected?
Short answer
First establish whether the invoice was successfully submitted. If it was not, correct the cause and resubmit it under the applicable system rules. If it was successfully delivered, do not overwrite or delete the original document; the correct next step depends on the nature of the error.
Has it been successfully sent?
The most important thing is not the word credit, but the state of the invoice. Otherwise an error is solved before shipment and otherwise an error after successful dispatch.
Correct data or export
If the invoice has not yet left, remove the cause of the error, create the correct e-invoice and send a valid document.
Original XML do not change
Once sent successfully, the integrity of the original document will be maintained and the next procedure depends on the reason for the correction.
There's only one way
A credit, a repair invoice or a new corrected invoice is only eligible under the Act on VAT and a particular business case.
Conclusion
For an already submitted e-invoice, first establish whether delivery succeeded and identify the nature of the error before selecting the corrective document.
Not legal advice. Machine-translated answer, not yet manually reviewed. For the exact wording, see the Slovak original.