The ARCSKEXT exit receives control during aggregate recovery (during verification) after DFSMShsm determines that the data set should be recovered, but before actual recovery. This exit is called before the ARCCREXT exit and prior to any data set conflict resolution processing.

When a data set has been renamed, ARCSKEXT is called twice if either the ARECOVERNEWNAMELEVEL or ARECOVERNEWNAMEALL parameter is specified on the ARECOVER command. ARCSKEXT is first called with the original data set name; if it is not skipped and the return code from the exit is 0, it is called again with the new data set name that resulted from the rename action.