The storage control cannot resolve the operands in the command input to match a subsystem ID or serial number.
None.
Verify that the command input correctly identifies the information for the primary volume and the storage control for the secondary volume. This message can occur if a CESTPAIR command is issued before a path has been established from the specified primary storage control to the specified secondary storage control. For CKD devices, check the configuration charts, system log, and SYS1.LOGREC. Also for CKD devices, the DEVSERV and CQUERY commands can also assist in this verification.
Peer-to-peer remote copy (PPRC).