Library /sys$common/syshlp/dbg$help.hlb DEBUG, Messages, CMDFAILED  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 the !AC command has failed

    Facility: DEBUG, VMS Debugger

    Explanation: The command has failed. The command has had no
    effect on the current debugging session.

    User Action: Reenter the command after correcting the problem.