Business Process Flow Key Notes

When we talk about Business Process flow (BPF) , there are lot of questions :

1. How does it operate, how is it stored in D365? Does it create a a background entity which can be modified? A BPF creates a background entity when the BPF is actually validated. This entity would have everything same as any normal entity. Only difference is we can not create custom forms this entity and also if we try to open BPF record from advanced find, it will open the primary entity of that BPF.
2. Can it span across multiple entities? Yes it can span across multiple entities(tables), OOB or custom in data verse. Only caveat is each stage can refer to different entities , and first stage would consist of Primary entity.
3. Can one entity have multiple BPFs? and if yes can I select specific BPF ? or automate the selection based on some…