CPHUI0010I Region is not associated with a CICSplex. System Definition was not found.
Explanation
Managed CICS region is not associated with a CICSplex or CICS DA was unable to find the CICS system definition for this CICS region.
System action
No CICS system definition to delete.
Response
If the region does not belong to a CICSplex then no additional actions are required. If the region is currently associated with a CICSplex and this definition should be deleted then re-run discovery and re-load model from the server.