CHECK(IBMXCF,XCF_SIG_PATH_SEPARATION) found an exception.

IXCH0906I has been placed in the message buffer. It lists single points of failure in this system's XCF signaling configuration. A single point of failure might be a single path, a coupling facility (CF), or a CEC. A CF might be a single point of failure when the connection is composed of multiple signaling structure paths in a single CF. A CEC might be a single point of failure when the connection is composed of multiple signaling structure paths in multiple coupling facilities but on a single CEC.

It is preferred not to have any single point of failure in an XCF signaling configuration. Loss of a single CTC link, single coupling facility structure, single coupling facility, or single CEC could cause total loss of signaling connectivity between two or more systems in the sysplex.