“myDATA” stands for “my Digital Accounting and Tax Application”. It is the name of the new electronic platform by which the Greek tax authorities use to communicate with businesses.
The EADE Electronic Books are a very important step in the digital transformation of the Tax Administration and its relationship with businesses.
The tax authorities have now issued the revised (v.0.6) technical specs (300 pages pdf in Greek attached). Later today, the unofficial translation in English will be added here.
Source AADE (in Greece) – Unofficial translation in English