Use the TSO/E EXEC command processor to either explicitly or implicitly invoke the ATBTRACE REXX exec in the TSO/E foreground. The EXEC command runs non-compiled programs in TSO/E.

The ATBTRACE exec displays ATB6xxxxI status and error messages on the terminal from which you invoked the exec.

Unlike APPC/MVS callable services, ATBTRACE requests issued from TSO/E are not protected from attention interrupts, so you can interrupt the trace request processing before APPC/MVS completes it. APPC/MVS defers the interrupt only until processing progresses to a point at which the interrupt will not cause contention for a system resource.