The PPRC TSO Command CESTPATH contains a Logical Subsystem (LSS) identifier that is not compatible with the other LSS identifier. One LSS contains CKD devices, and the other LSS contains FB (Fixed Block) devices.
The command is rejected.
Verify the Establish Path request has the correct LSS values for the primary and secondary storage subsystems. After any changes or corrections, reissue the request.
Peer-To-Peer Remote Copy (PPRC).