Shopping cart approvers are picked from ECC

Hi Experts,

we are working in SRM 5.0,

our approvers are maintained in ECC and the logic is built to pick the approvers .

please advise on the below queries.

1. we are unable to view the approvers in approval preview before the SC is ordered , can see approvers in approval preview only when the SC is ordered and workflow is triggerred.

2. SC at item level i:e, item 1 & 2 created using CC AAA & item 3 & 4 created using BBB.

what workflow to be activated and any BADI to used to achieve this.

we are new to Application controlled workflow. its really urgent.

Rgs,

Kumar