AMC1 Article 5 Interoperability requirements
CAA ORS9 Decision No. 1
TRANSFER OF SURVEILLANCE DATA
When transferring surveillance data to other air navigation service providers (ANSPs), ANSPs should use the ASTERIX data format as specified in Part 1 of EUROCONTROL-SPEC-0149 on the basis of the appropriate ASTERIX Data Categories.
Note: Further information on the use of the ASTERIX data format as well as the list of available ASTERIX Data Categories and their respective specifications can be found at https://www.eurocontrol.int/asterix.