Automatic AT Generation

CMD (Command), REP (Reply), COD (Code), and USR (User Data) are inherited per message ID. For example, assume a message ID has a command definition on the instance, and the same message ID is defined for a class with reply data. The command and reply data are not merged on the instance, and the class definitions are not inherited at all.

Messsage Overrride and Status specifications provide instructions for the generation of the AT entry. This data is never inherited, but is used to create one AT entry for the object where they are specified. Remember that the AT is message oriented and the AT entry usually has the message ID as a condition, so for example, inheriting a Status would create duplicate entries.