Hi Doug
You are correct about Adagio PO doing what the poster wants, and since you mention the situation where a PO is ignored because it is over the limit, it is appropriate that the solution should exist in Adagio PO.
However, in my many years of dealing with businesses, I have never encountered a company that would shelve a PO without contacting the potential customer, if only to tell them that they will accept the order COD. Companies survive by making sales, not ignoring them.
Steve