There is another view: that these are sales subject to a resolutive condition.

Contingencies that cancel the contract if certain event occur are known as "resolutive conditions".

A personal servitude may also expire upon the fulfilment of a resolutive condition.

A valid resolutive condition has the following effect:

A resolutive condition is where there is an existing debt which is destroyed on the occurrence of an event.

Mackeurtan, however, feels that contracts of sale or return are examples of contracts subject to a resolutive condition.

On Friday 08/05/09 the BBL canceled their previous decision and granted a licence with resolutive condition.

An affirmative resolutive condition is fulfilled by the occurrence of the event; a negative resolutive condition is fulfilled when it is certain that the event will not occur.

On the other hand, if the parties agree that the obligations under a contract should operate in full, but will come to an end if an uncertain future event either does or does not happen, they are said to have agreed to a resolutive condition.