The SKEYCOMPARE keyword specifies that secondary key comparison should be performed to determine whether the list entry should be processed. Secondary key comparison can request that the designated list entry be equal, less than or equal, or greater than or equal to a specified secondary key value.

Secondary key comparison is meaningful only for list structures allocated in a coupling facility of CFLEVEL=9 or higher. If the structure was not allocated with secondary keys, the SKEYCOMPARE keyword is ignored.