Last PO to a supplier 6 months or more

Hi Everyone,

I have a request from my Procurement folks to create an alert that tells the buyer when a PO was created to a Supplier that the previous PO created for that supplier was 6 months or more in the past. Their issue is email addresses or supplier contact information has become stale- so the supplier or whom ever the contact is for the supplier never receives/processes the request. Procurement figures out there's an issue when they follow up on past due purchase orders or when it becomes an urgent issue that the PO was not filled as expected. Some of