Link PO number to Routecard/Work Order

Hi All we have a customer that is sending us work to do so we are getting a PO order from them and then also a Routecard/Work order, is it possible to link these two together on Epicor, so as the parts go through the jobs the right paper work follows them.

Any pointers would be great

Hope i have brought this across well

Cheers all

If you attach the router to the part then it should auto attach to the job when made.