TM 1-1510-218-10 3C-78 Table 3C-15.  CDU Annunciations and Scratchpad Messages  (Continued) ANNUNCIATION / SP MESSAGE INITIATING CONDITION RESET MECHANISM LOCATION BLINKING NOT CLEARABLE CDU MSG ALERT verify proc In    AUTO    or    FLYOVER sequencing   mode   when TTG  is  1  minute  before sequencing into a discontinuity  or  the  TTG is  less  than  one  minute when the waypoint preceding  a  discontinuity becomes the TO waypoint. Clear key or delete the discontinuity, delete the associated waypoint,   insert a waypoint between the discontinuity and the associated waypoint, remove the related SID, STAR, or Approach or direct-to any waypoint  or  the discontinuity becomes the active waypoint. A N X VNAV IS ACTIVE    Attempt to toggle between CLIMB and DESCNT  when  a  VNAV is active. Clear key. SP A V/UHF BUSY Attempt to request a V/UHF     sequence     while another    sequence    is    in progress    for    the    same radio. Clear key. SP A WPT MAX EXCEEDED Attempt to enter a SID or STAR with more than 30 waypoints. Clear key. SP N wpt passed Active    waypoint    passed and    sequencing    to    the next waypoint is inhibited. Clear key, or sequence waypoint. A N wrong key Incorrect SA/AS key received. Clear key on entry   of   correct key. A B xtk alert Aircraft crosstrack deviation    exceeds    crew entered specified threshold   (with   3-second filter). Clear key or aircraft is maneuvered     to bring   the   cross track deviation within the threshold  or  the deviation threshold is expanded. A B