CIF SD Orders and GATP Filter

Hello Guru´s,

My client has this situation: In one specific center, it receives Customer Orders from huge clients and really small clients.

The GATP must run only for the Orders from the big clients, whereas the small clients must run simple ECC ATP check.

Is there anyway of filtering the orders that goes to APO to perform ATP? Any EXIT or BADI? And theses filtered orders, perform the ECC check?

thank you for the support.

Rafael