What was found
FLT 1417, CREW RECEIVED ECAM FUEL ACTUATOR TRANSFER FAULT IN CRUISE AND ADVISED DISPATCH THAT FUEL HAD BECOME TRAPPED IN THE ADDITIONAL CENTER TANK. CREW PERFORMED QRH PROCEDURES BUT THE MANUAL TRANSFER ATTEMPT WAS UNSUCCESSFUL. FLIGHT DIVERTED AND LANDED WITH INCIDENT. MAINTENANCE ISSUED A DEFERRAL ON THE ADDITIONAL CENTER TANK AUTO TRANSFER SYSTEM, AND LATER SYSTEM OPERATIONAL CHECK WAS GOOD. FOLLOWING A SUBSEQUENT FUEL ACTUATOR TRANSFER FAULT, MAINTENANCE REPLACED THE FUEL VALVE ACTUATOR. OPERATIONAL CHECK WAS GOOD.