We bundled the amount into 2 lines initially. This allowed the PM to monitor budget shift during the project. Lately, we have been successful to split the PO into multiple lines - one line for each deliverable. This works in fixed bid scenario. To ensure rate compliance, we route the transactions to procurement buyers.
We are revisiting this strategy with 2 options:
a) In case of fixed bid scenario, the requisition is created with a single line and routed for collaboration. The supplier will split the lines based on milestones and attach their SOW. We turn on bid ranking for additional savings.
Our biggest roadblock here is the inability to attach SOW at header level. We have a ticket with Ariba to understand further.
b) In case of T&M, have the rate cards as ACC based contract and the suppliers will invoice against the contract.
We are testing these and working thru buy-in's.