CVMI program

Hello All, my company is considering to deploy the CVMI program.  My understanding is that there has to be a blanket purchase agreement created as the reference.  When the supplier replenishes the materials, a standard purchase order will be created on behalf of us.  While the receipt transactions are against the standard purchase order, the invoice that is generated under the consuption is referenced to the blank purchase agreement.  I ownder if any one can adise if there is a sranard functionality in Oracle to establsih the blanket purchase agreent and those standard purchase orders.  Thank you in advance for your