Need to Get auto Approved PO form Purchase Requsition

Hi All,

We have a requirement that after approving the Purchase Requisition.

we need a Approved Purchase Oder as out come.

for this we crated ASL with release method = automatic,Sourcing rules and Assign Sourcing. 

updated the Workflow Item Attributes

- Is Automatic Creation Allowed? = Yes (This is the PO Create Documents workflow)

- Is Automatic Approval Allowed? = Yes (This is the PO Create Documents workflow)

attributes but we are getting Incomplete PO only.

Are we missing any thing Please let us know.

Regards,

Naveen