Close Service PO without service entry

Can anybody help me about service PO

Is there any possibility to make service PO without making service entry. that means how to make service PO 2 way match. for this service POs the business doesn't want to make service entry. they want to make a service PO and they want to close this PO through Invoice verification only without service entry intervene. once invoice was posted automatically PO should close. business requirement is they don’t want to post service entry for this type of Purchase orders.

how to do this process in SAP.

your time and help would be appreciated