An ATDE can be attached only by a DSP running on the JES3 global processor. If IATXATDE is issued by a DSP running on a JES3 local processor, the ATTACH/DETACH ATDE service routine immediately returns control to the DSP without performing the requested function.

Do not use this macro in any routine that might run in a C/I FSS address space or under the JES3 auxiliary task. (This macro may be issued only when running under the JES3 primary task.)