As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST ALL GREEN HYDRAULIC PRESSURE AND FLUID AS GEAR RETRACTED AFTER TAKEOFF. CREW FOLLOWED COM PROCEDURES. AIRCRAFT TURNED BACK TO MSP. ALTERNATE EXTENSION OF GEAR AND LANDING ACCOMPLISHED UNEVENTFULLY. AIRCRAFT TOWED OFF OF RUNWAY TO GATE. REPLACED GREEN LEAK MEASUREMENT MANIFOLD, SWUNG GEAR, LEAK CHECKS OK.