The IXCDELET macro allows an authorized routine to change the state of a failed, quiesced, or created cross-system coupling facility (XCF) member to the not-defined state. XCF does not recognize the existence of a member in the not-defined state. Therefore, all future requests against this member will generate a return code indicating that the member no longer exists. For created members, XCF notifies the active members of the group, through their group user-routines, about the change in the member's state.