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POM Invoices

POM Invoices are invoices processed against an order raised within Aptos.  These invoices should be sent from the supplier straight to the Accounts Payable office quoting the order number.  These invoices are then matched to the order.  If the invoice is an exact match it will be Scheduled for Payment and picked up on the first BACs run produced on or after the due date of the invoice. No further action will be required by the School/Unit.

Any invoices which are not an exact match to the order or have not been receipted will still be processed but will mismatch and the invoice will therefore be withheld from payment.

All Aptos users have access to the mismatch list within Aptos and should access this on a regular basis.  It is important that any invoices in the mismatch list are dealt with as until the mismatch is resolved the invoice will not be released for payment.

Please see Mismatch Procedures (PDF, 671 KB)  for more information on mismatches and how to access the mismatch list.

Please see mismatch process maps within the links on the right of this page which have been produced to help guide you  through the main reasons why a mismatch occurs and the action required to resolve these. 

Accounts Payable also run Mismatch Training Sessions. To book a place on one of these sessions please contact Sarah Latto ( within the Procurement Office.

If you have any queries regarding orders, invoices or mismatches please e-mail