Ensure the HUB has IBM z/OS Logger streams defined and they are operational.
CICS
The call to "TIB_WRITE_SYSLOG" cannot be Functioned Shipped (via MRO) - each call is executed in the CICS Address Space issuing the "TIB_WRITE_SYSLOG" call.
The call to "TIB_WRITE_SYSLOG" is synchronous, but due to the minimal overhead can also be issued from programs running on the QR TCB.
The field HUB in the TIB_Write_SysLog control block is ignored when specified.
If the CICS region Mainframe RED is enabled, the HUB name set for that region is used.
Batch
The call to "TIB_WRITE_SYSLOG" is synchronous.
The field HUB in the TIB_Write_SysLog control block will be used if present.
If HUB is all blanks or nulls, the Batch default is used.
After the first call to "TIB_WRITE_SYSLOG", the HUB being used is locked (you cannot change the HUB name between calls).