If the road trip was partially refunded we expect the remaining compensation amount in this request, an amount of 0 is to indicate the entire road trip was cancelled.

We will return a 200 OK if the road trip was not previously cancelled and 400 BadRequest if it was. A higher amount than the current compensation amount will cause a 400 BadRequest, an equal number will return a 200 OK.

A 400 BadRequest is returned when supplying a currency different to the original compensation.