What was found
RECEIVED AN INFLIGHT ECAM MESSAGE. HYD G LOW RESERVOIR SCHEMATIC SHOWS A BLANK BELOW NORMAL QTY. ECAM & QRH PROCEDURES APPLIED. GREEN SYS BELOW BOX. DECLARED AN EMERGENCY & DIVERTED. FLIGHT LANDED WITHOUT INCIDENT & WAS TOWED TO THE GATE. AFTER LANDING, LEVELS APPEAR NORMAL. R & R QTY INDICATOR OF GREEN HYD RESERVOIR IAW AMM 29-11-41. PERFORMED FUNCTIONAL CHECK OF RESERVOIR LOW LEVEL WARNING IAW AMM 29-31-00. CHECKED GOOD, NO FAULTS NOTED.