You can request a summary dump for an abending task by coding the SUM option of the SNAP macro. You can also obtain a summary dump by coding the DUMPOPT option on the ABEND or SETRP macro and specifying a list form of SNAP that contains the SUM option. Use the DUMPOPX parameter on ABEND or SETRP to obtain an ABEND dump that contains data space storage. When you use DUMPOPX, specify a list form of SNAPX that contains the SUM option.
If SUM is the only option that you specify, the dump will contain a dump header, control blocks, and certain other areas. The contents of the summary dump are described in z/OS Problem Management.