SS$_NORMAL         Normal successful completion.
    SOR$_BADLOGIC      Internal logic error detected.
    SOR$_BAD_LRL       Record length n greater than longest specified
                       record length.
    SOR$_BAD_SRL       Record length n too short to contain keys.
    SOR$_ENDDIAGS      Completed with diagnostics.
    SOR$_EXTEND        Unable to extend work file for needed space.
    SOR$_MISS_PARAM    The desc argument is missing.
    SOR$_NO_WRK        Work files required; cannot do sort in memory
                       as requested.
    SOR$_OPENOUT       Error opening file as output.
    SOR$_OPERFAIL      Error requesting operator service.
    SOR$_READERR       Error reading file.
    SOR$_REQ_ALT       Specify alternate name file (or nothing to try
                       again).
    SOR$_RTNERROR      Unexpected error status from user-written
                       routine.
    SOR$_SORT_ON       Sort or merge routines called in incorrect
                       order.
    SOR$_SYSERROR      System service error.
    SOR$_USE_ALT       Using alternate file name.
    SOR$_WORK_DEV      Work file name must be on random access local
                       device.