Cloning MSC SYSIDs in an IMSplex

Even though the IMSplex adds every local SYSID in the IMSplex to each SYSID table in the IMSplex, you should clone all local SYSIDs within each IMS system in the IMSplex when removing the intra-IMSplex MSC links. To clone a local SYSID, clone an MSNAME statement that contains it.

Cloning local SYSIDs ensures that the IMSplex can route and process messages on a shared queue even if the IMS system that owns the SYSID is not available and the SYSID is not included in the SYSID tables in the IMSplex. MSC SYSIDs are not stored in the coupling facility within the IMSplex. If an IMS system cannot recognize the SYSID of a message on the shared queue as local when processing application program messages, the IMSplex issues pseudoabend U0830.