Purchase Order E-mail Sender - Requisition Preparer

We are currently having an issue where our PO'S are being sent by the buyer.

(PO_FROM_EMAIL_ADDRESS = BUYER)

Some of our inventory items are fresh produce with a short life span and have time critical deliveries for our manufacturing.

When a requisition is raised for these items, a PO is sent to the supplier from the buyers email address. If there is any issue with the items being ordered the supplier just hits reply to the PO email confirmation. This sends the buyer an email, though the buyer may not be available on that day to forward the message to the planners/stores/production teams on site etc.