Invoice and accounting data are transmitted to myDATA, which returns a unique MARK for each document.
The facts
| Format | myDATA e-books with a MARK per document |
| Goes to | AADE, through the myDATA platform |
| Regime | Post-audit — you issue, then report |
| Invoice number | Stays ours: gap-free, sequential, yours to control |
| Seller tax ID | VAT number |
| Buyer tax ID | VAT number |
| Peppol EAS code | 9933 |
| Integration | Direct, no third-party provider needed |
The part that costs a day
myDATA is not a clearance system but it is not a filing cabinet either: the MARK returned for each document is what ties your books to the authority, and the figures you report have to reconcile with your VAT return. Where the two disagree, the version in myDATA is the one that counts, so a correction made only in your own ledger fixes nothing.
We issue gap-free, sequential numbers that reset on your schedule and are never reused — including for voided documents, which keep theirs. The authority takes the document as numbered.
Never extracted from the gross. The two formulas differ by a cent and the wrong one gets the file rejected. The leftover cent is declared as payment rounding (BT-114), where the standard puts it.
Straight talk
We do not hold your signing certificate, we do not file your periodic returns, and we are not your accountant.
No third-party provider is required: we build and validate the document ourselves, and you can still connect one if your accountant prefers it.
Oltrano