We are aware of how challenging and intricate it is to create applications that support “myDATA”.
You can obtain the complete instructions from AADE’s website in its documentation titled “myDATA API Documentation ERP v1.0.6 official“. This dll includes a wealth of additional tools in addition to all the information included in the REST API documentation and Greek tax laws. 
 
This product is aimed at software development companies. It offers a number of simple tools that make creating apps that support myDATA simple and quick. Using the dll provides you with the following advantages:

• You save a significant amount of money and time. Deploy myDATA support in a fraction of the time it would take you if you worked directly under AADE guidelines.

• Your applications become simple and easy to maintain.

• You do not require any third-party documentation.

• You don’t need to know how to use the “post” and “get” methods.

• You do not need to investigate whether the classification combination of the invoice type is acceptable to AADE. There are built-in functions for validating and retrieving myDATA classification combinations.

• You do not need to know how to generate or edit XML files. Even if you are an expert with XML files, you will save a significant amount of time.

• The error messages provided by AADE can be translated into Greek and ready to be displayed to the Greek end user.

The most significant point is that you will no longer be concerned with “myDATA” new versions and adjustments. Someone else has completed the job for you.