Hi,
Navigate to Procurement and sourcing setup > Policies > Purchasing policies
Select the procurement policy and click on it to open
expand policy rule and click on purchase order creation and demand consolidation
in the dialogue box beside it click on create policy incase if there is no policy
click on manual purchase order creation
click on automatically create purchase orders
click on close and save.
then try to raise a PR and approve it to see, system will create PO automatically for you.
Please let me know if this help.
regards,
