vector registers can be accessed only in scope 0

    Facility: DEBUG, VMS Debugger

    Explanation: An attempt was made to reference a vector register
    from a scope other than scope 0. DEBUG will not accept a command
    which specifies any other scope for a vector register.

    User Action: If the current scope has been set to a scope other
    than scope 0 (using the SET SCOPE command), use an explicit 0\
    pathname to access the vector register.