Copy Sales Order Reference# to Purchase Order#

Copy Sales Order Reference# to Purchase Order#

Hello,

We use our customer's purchase order number as the order number on our purchase order to the supplier.  We direct ship everything from our suppliers and the customers then see their PO number on the packing notes (instead of a sequentially-generated one).

Therefore, is it possible to use automation to copy the Sales Order Reference# (customer PO) to the respective Purchase Order# (our PO) when converting the Sales Order to a Purchase Order?