The job attempted to join a Cross‑System Coupling Facility (XCF) group using a member name that already exists. This is usually the result of an attempt to start a PowerExchange Logger with a logger ID that is already active.
Processing ends.
Make certain that the logger ID specified in your startup JCL is the one you want to start. If not, edit and run the startup JCL. If the logger ID specified in your start‑up JCL is the one you want to start and you are trying to perform maintenance on your logs, you must first stop the active PowerExchange Logger. Examples of such maintenance tasks are:
Adding, moving, or changing the size of active logs.