3rd-party ATP in Order Management

Hi,

for Order Management R12.2 we would like to use an external ATP functionality, not ASCP.

The main challenge I have: how can I get my custom scheduling logic raised, what is the best approach?

Ideally I could just call a custom code in the Schedule - Line subprocess in the OM workflow. But I guess there is no standard hook or so to call a custom code? So do I really have to modify the standard OE_OEOL_SCH.SCHEDULE_LINE procedure?

Does anyone have experience with that? What would be the best approach to do so?

REMARK: I'd prefer to use the OM: Bypass ATP = Yes option, so that I don't have to do any basic "ATP on collected data" at all. I am aware that I can place custom code in the ATP APIs (Custom hook, pre-/post-ATP). However I'd prefer to avoid the standard ASCP setup and just place my custom code.