During startup, the XRC control address space could not start the ANTCLNNN address space to manage cluster communication with the specified master session and master high level qualifier.
If sessions were previously coupled from this system while the cluster manager was active, the system will report a COUPLING_TIMEOUT condition for this cluster in the associated master session.
See "Return and Reason Codes for the ASCRE macro" in z/OS MVS Programming: Authorized Assembler Services Reference ALE-DYN for an explanation of the return and reason codes. Correct the error and issue command F ANTAS000,CREFRESH to reinitiate cluster setup processing.
Extended remote copy (XRC)