IBM APAR OA53955 (Z/OS 2.3) or OA55315 (z/OS 2.2 and lower).
Resolution
Apply CA Librarian r 4.4 PTF SO04128
Additional Information
To invoke the PTF SO04128, the LAM subsystem needs to be reinitialized. In CAS9 RIMPARMS member : PRODUCT(CA-LIB44) VERSION(LJ44) INIT(LJ44INIT) PARM(REINIT,NAME=LAM)
---FYI there is also a circumvention noted in the PTF, if you cannot immediately apply SO04128