MRP Not Calculating U Stocking Type Correctly

Recently, we've struggled with MRP completing and then it needs to be restarted manually.  However, in our manual process, the calculations for U stocking types are not working correctly.  Meaning, instead of prompting for a "work order" (using a ghost BOM to calculate demand on a new item or just stopping altogether), it's prompting for a purchase order.

Is there a report or process we need to run first or fix an incorrect processing option to have this work correctly?