"Incompatible behavior" refers to actions or attitudes that do not work well or go together. It means that certain behaviors or ways of doing things do not match or are not suitable for a particular situation or for each other. Full definition
You can read more about this method by reading my hub on «differential reinforcement of incompatible behaviors». (pethelpful.com)
As soon as the dog notices the trigger, ask them to do a pre-trained incompatible behavior like sit or «watch» and reward with really yummy food treats until the trigger is out of view. (academyfordogtrainers.com)
Jumping and sitting are totally incompatible behaviors. (phph.net)