5.2.3 Acknowledgement
Once the message recipient has downloaded a RIN message, that recipient may respond with an acknowledgement message. The acknowledgement file shall be called ACK_FFFF.xml
with FFFF
being the file name without its extension, of the RIN message being acknowledged.
The acknowledgement shall be placed into a folder called acknowledgements/
which is placed into the same folder as the RIN message(s). Its syntax is defined in Clause 6.