Many ISO programs also maintain vendor information for quantity over/under shipped and quality-accept/reject quantities or %.  
Karen
Bula Forge

Wouldn't work for us.  We update the PO due date as we find that shipments will be delayed or early, or as we push them out or pull them in.  If we didn't update the expected date, our schedule wouldn't be any good.  There would have to be separate fields for original due date and revised due date for the performance report to work, I'd think.
 
In any case, we don't much need a vendor performance report, but could really use better tools for expediting, probably based on the PO due date report/select by vendor.  Add second description line, add place for vendor to put ship date, and we'd be set.