ERS AP invoice create based on receiving transaction(Deliver) instead of receipt transaction(Receive

Dear Sir,

We need to ERS AP invoice program working based on receiving (Delivery) transaction instead of receipt transaction(Receive), because when we are using 3 way matching and receipt routing was standard receipt or direct delivery,Invoice has created once receive was done and material is not delivered. But we can able to validate the invoice and payment the invoice. At the same time when we are using 4 way matching and the PO receipt routing was inspection required and transaction has been done and then run the ERS program. Invoice created and the AP employee try to validate