You have Ordered Something and No Longer Need It
Cancel the purchase order (PO). To cancel, please send a request to TSS
with the purchase order number.
The Order has been Received and the PO has a Remaining Balance
You have an “open commitment” balance and you need to close it. Contact TSS
Before closing a PO, you should be confident all invoices have been received and/or paid. See Tufts PO/Payment Inquiry