As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI THE CTR R FUEL PUMP EICAS MESSAGE APPEARED , AC RETURNED TO GATE(BTB) AND MTX GROUNDED AC . MTX VERIFIED LOW FUEL IN CENTER TANK. TRANSFERRED FUEL OUT OF CENTER TANK IAW 28-26-00. RH CENTER PUMP OPERATES NORMAL. A/C REMAINS NO ETOPS.AND RETURNED AC TO SERVICE.