As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LEVEL OFF AT FL 340 SCRATCH PAD MESSAGE, SINGLE FMC OPERATION, FOLLOWED BY MAP FLAG ON THE FIRST OFFICER`S MAP DISPLAY. FIRST OFFICER WAYPOINT INFO TOP RIGHT OF DISPLAY WAS MISSING. ACFT GROUNDED. ACCOMPLISHED RESET PROCEDURES IAW QRH. THE FIRST OFFICER'S DATA RETURNED NORMAL.