PO in incomplete status

I am doing setup in a new instance.
All the setups are complete in Purchasing but PO’s are not getting approved.

Even after clicking on the approve button system does not starts the approval WF and order shows as incomplete

Please check if 'owner can

Please check if 'owner can approve' check box is enabled or not

PO: Set up > Purchasing > Document Types

Po Approver

Check whether approver is there or not , if approver is there check approved level.
Take Own  employee as approver

PO Approver Flow

 

After completed all the employee setups, approve attributes and purchasing Hierarchy; run the request: Fill Employee Hierarchy
 
Request > Submit new Request Run > Fill Employee Hierarchy
 
Regards
 
FV