What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO TUL. DURING CRUISE ECAM MESSAGE FOR FUEL USED AND FUEL ON BOARD DISAGREE. FLIGHT CREW ACCOMPLISHED THE QRH FUEL LEAK PROCEDURES. DURING DESCENT INTO TUL, THE FIRST OFFICER TOOK A PICTURE OF ECAM AND IT REFLECTED FUEL OVERLAND AFTER CLEARING THE INITIAL ECAM. THE LEFT MAIN TANK WAS ABOUT 1000LBS LESS THEN THE RIGHT TANK. THE AIRCRAFT LANDED SAFELY AT TUL WITHOUT FURTHER INCIDENT. MAINTENANCE ACCOMPLISHED TSM 28-11-00-810-805-A AND THE FAULTS CLEARED WITH NO ADDITIONAL FAULTS OR ISSUES NOTED BY MAINTENANCE. NO SPECIFIC PART CAUSING THE DIFFICULTY WAS IDENTIFIED BY MAINTENANCE.