AHL128I

Explanation
A generalized trace facility (GTF) module was not
found.
In the message text: mod
The module that could not be loaded.

System action
The system abnormally ends GTF.

System programmer response
Use the linkage editor to put the
missing GTF module mod into the system.  Restart
GTF.

Source
Generalized trace facility (GTF)

Module
AHLGTFI