There is a small notch that engage with a cog wheel in the gear box that lock the drive shaft When you put the gear lever in to "p". If you can move the vehicle when the gear in "P" and parking brakes are released, yes, the notch or the cog wheel has damaged. Otherwise, OK. But it is better if you can change the gear oil. This accident could have left broken metal particles in the gear box, that can be harmful to the CVT belt.