How do you get the PR to automatically convert to a PO when CPA, Sourcing Rule and ASL exist.

I have a CPA, Sourcing Rule, and ASL for an item. The Document type for PR has the Use Contract Agreements for Auto Sourcing box checked ( oracle 12.2.9) We are creating a Sales order with source type external - this should create a PO - but it stops at PR and we have to manually auto create the PO referencing the PR. We need to use the CPA as we have one ship to location with one price and another location is another price. So we set up the Advanced price List using price attributes.