We need to charge multiple items to 1 dept no mattter who orders the items. Our POs are out of company 1000 and cost centers are set up in company 1300. Does anyone else have this issue and have a way around it?

We have 3 items that need to be charged to the lab no matter who orders the items. The issue we have is that our POs all come out of company 1000 and our depts are all out of 1300. So I can't put the issue account in as the Lab because that cost center doesn't exist in company 1000. Just was wondering how other companies deal with this issue.