I'm sorry, I didn't quite make myself clear with my last post.

A Vehicle has one dealer which is it's IssueDealer.

However, a Claim also has only one dealer, RepairDealer, but this...

OK,

A vehicle has one dealer (IssueDealer).

A claim belongs to a vehicle.

A claim has one dealer (RepairDealer).

Does that help more?

Thanks very much for your help!