After upgrade to Connect:Direct for z/OS 5.1.01, some Run Task are getting S0C1 abends in module DMGCBSUB
*SABA001I - DMGCBSUB S0C1 U0000 ID=S STATE=A TASK#=0021 PSW=078D0400 00000772 ( )
* PROCNO=00024048 TCA@=96139500(SUBTASK) LDPT=95E3C000
Old copy of DMCXSUBM in link list.
Resolving the problem
There was an old stage 1 submit exit, DMCXSUBM, found in link list. Once it was removed the abends ceased.