AHL036I

Explanation
The generalized trace facility (GTF) has detected
an error in a common storage area (CSA) that GTF uses to copy trace
data and is attempting to correct it.
Note: GTF completion  be
indefinitely delayed. If this happens, there will be no impact to
the system outside GTF.

System action
The system abnormally ends GTF.

System programmer response
A single occurrence of this message
needs no action; however, repeated occurrences indicates a problem.
 Examine the SVC dump provided and determine why the use count of
the GTFBLOKs is not going to zero.

Source
Generalized trace facility (GTF)

Module
AHLBFMGR