A model is not a truth, it is a diagnostic lens. Pick a breakdown, then hold each of the three models over it and read what that lens can and cannot see. Then commit: which is the smallest model that actually explains this failure? Reaching for the transactional model every time is its own kind of error.
Pick a breakdown
Diagnose it: what is the smallest model that explains this?
Choose a model
Explore the three lenses on the right first, then commit to one here. The feedback will tell you what your choice can and cannot account for in this specific case.