myDATA
myDATA is the digital books and invoice reporting platform of AADE, the Independent Authority for Public Revenue in Greece.
Greek businesses transmit invoice documents to myDATA so AADE has a near-live view of issued and received invoices. The tax record lives at AADE. Your ERP or accountant still keeps the books.
For accounts payable, the practical work is capture, coding, approval, then a clean transmission. Re-keying lines into myDATA is the same volume problem finance teams hit with DATEV or Exact.
Cortena codes supplier invoices and transmits myDATA documents after you approve, so AADE receives what you signed off.