8C6

Explanation
A program attempted to free a CIB control block
that was not properly chained for execution.

System action
The attempt is rejected, and the CIB is not freed.

System programmer response
Using the information that was dumped
for the abend (CIB and associated CSCB), identify the program that
attempted to free the CIB. Change the program to avoid chaining a
CIB that is not valid. IBM® recommends
using the MODIFY macro for this purpose.

Source
Master Scheduler Address Space/SVC 34