Interdepartmental Invoices (in AIS)

Interdepartmental invoices (IDs) allow a department to charge another department for goods or services.  Both the vending department and the ordering department have a responsibility to ensure that IDs are processed accurately and in a timely manner.

Effective October 1, 2018, interdepartmental orders (ID’s) cannot be used to make purchases at the bookstore.  Please use a WashU ProCard for purchases < $500, create a Purchase Order (PO) through Marketplace, or use personal funds and submit reimbursement.

For a full overview of the automatic payment process and participating vending departments, click here.


Contact Alan Mehringer
(314) 935-4036

Email Alan