hello again door locks

[Home away from home]

just wondering if anybody has had to change the latch on the main entrance door(2013 Montana 3100RL)as the dead bolt pawl has fallen out of ours .I have the piece that fell out and looks like it is missing a pin or screw to hold it in place in the lock assembly on the door latch my question has anyone taken this apart and repaired it or did you end up replacing the whole latch. and was the a keyless version available ?

Thanks
bob and Liz