Transacting with PSE on the Ariba Network

PSE uses the Ariba Network to issue purchase orders, receive electronic invoices, invite suppliers to sourcing events and manage contracts. The vast majority of procurement activity is conducted over the Ariba Network.

If you have active contracts with PSE that have not yet been transitioned to the Ariba Network and would like to inquire about when this migration will take place, please email Please include your company name, contract number(s) and Ariba Network Identification Number (ANID) in the email.

If you need training resources to assist with learning how to transact with PSE on the Ariba Network, please reference the documents to the right. There are also several links to information that may be useful directly on Ariba’s website. You may reach out to if further assistance is needed.

Thank you for your continued partnership as a valued supplier to PSE.