As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BTFS AFTER SHUTTING DOWN APU RECEIVED "FUEL TRIM LINE FAULT" EICAS MESSAGE // REMOVED AND REPLACED APU FUEL ISOLATION VALVE PER A330 AMM 28-29 AND PERFORMED OPERATIONAL TEST. OPS TEST NORMAL OK FOR SERVICE. ACTUATOR ASSY, OFF 33-2409-9-0001 S/N 00757 ON 33-2409-9-0001 S/N 01186