Tag ID 0X001: What does this mean?

Question:  
What does the tag ID "0X001" mean regarding a charging process?  

Answer:

0X001 is the term for an unidentified customer. When a charging station sends the tag ID of a customer to be.ENERGISED, the be.ENERGISED backend tries to identify to whom this identification medium is assigned by means of this tag ID. If the backend cannot assign the tag ID, "0X001" is entered instead.

This behavior occurs, for example, when a charging process is started, but every RFID card is accepted at the charging station. In such a case, the "demo mode" is activated at the station. More information about this mode and the free charging mode can be found in this article.