CPHMC0135E   The SYSID SYSID specified for the new region matches an existing CICS region SYSID in the CICS DA Model.

Explanation

The SYSID for the new region must not match a SYSID of a region already in the DA model.

System action

The command fails.

Response

If the existing entry with the SYSID in the model is no longer valid then delete it from the model, or enter a different SYSID and try again.