I was in an accident. Where the van rolled 17 times. On or about the 12th roll. The retaining lock on the shoulder strap released. This allowed me to slide out of the seatbelt. This caused me more complicated injuries. The vehicle is currently at copart impound lot in Oklahoma City, OK. Will be available for inspection upon your request. The Oklahoma highway patrol report indicated. I was wearing my seatbelt but the retaining lock on shoulder strap had broken. The Oklahoma highway patrol report # OHP25-024333. There were no warning lights or messages to indicate that there was a problem.