1) CA Top Secret fix RO76550 is applied if you are running CA Top Secret r15.
2) The SORT library is APF authorized.
3) If 1 and 2 above check out, the region size for the CA Top Secret address space may be too small. Try starting CA Top Secret with REGION=0M. (Do a temporary shutdown and restart (S TSSproc,,,REINIT) of TSS).