myDATA e-invoicing
Greece
In Greece electronic invoicing became mandatory on 2 March 2026 for businesses with 2023 revenue above one million euro and on 2 November 2026 for all remaining businesses; documents are issued through an authorised provider or the authority's own applications and sent to myDATA.
Supported processes
Issuing through an authorised provider
The invoice is produced in the format the authorised provider expects and transmitted.
Transmission to myDATA
The document data is sent to myDATA and the returned mark is written onto the document.
Matching incoming documents
Received documents are matched against the records in SAP and differences are flagged.
Integration path
The document is created inside SAP. Country-specific rules are applied outside SAP, in the TecT BTP Bridge layer; from there the document is sent through an authorised provider to myDATA and the result is written back to the record in SAP.
Clean Core is preserved: no local add-on is installed in the SAP core, and when the regulation changes the update is made in the integration layer. The same structure works from SAP R/3 through to Public Cloud.
SAP releases
- SAP ECC 6.0 (R/3) · Including SAP R/3 based installations
- SAP S/4HANA
- SAP S/4HANA Cloud Private Edition
- SAP S/4HANA Cloud Public Edition · Integration runs through the layer
Official sources
The regulatory information on this page was last checked against official sources on ; always rely on the sources for current obligations.
- Mandatory Electronic Invoicing – frequently asked questions (opens in a new tab)Independent Authority for Public Revenue (AADE) · aade.gr
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