PO created by iProcurement not initiating for approval

We are on Oracle R12 and have implemented iProcurement. We have punch out based on CPA as well as catalog based on BPA and is working fine. I am trying to implement another smart form based on a CPA which should produce a standard PO. I got it working to the point that once the requisition is approved it creates a standard PO, however, is in 'Incomplete' status. I want it to initiate the approval workflow. What am I missing. I have checked the Approved Supplier List setup and it looks fine.

Thanks

Naushad