Can I call the credit check API in the contract approval WF?

We need to do a credit check at the time we create the contract.

But my understanding is that credit checks can be performed when orders are received in OM, but not when contracts are created in PPM.

So, we are thinking if it is possible to call and realize a credit check API using the Contract Approval WF.

1)Is there API for credit check?

2)Is it possible to call API for credit check in BPM?

If you have any ideas, please let me know.

Thanks,

Mayuko