![Guidelines](/-/media/Project/PSE/Portal/ArticleImages/Tile-Guidelines-Teal.png?h=300&iar=0&w=740&rev=b3c505cb2fd14de288c05a0dc2daefcf&modified=20231102210447&hash=37B6426FE11398CA4009D866734DCC93)
![Becoming a supplier](/-/media/Project/PSE/Portal/ArticleImages/Tile-Supplier-Blue.png?h=300&iar=0&w=740&rev=02af4f0dda6c4e27ab2e04c3d2c1dd7d&modified=20231102210448&hash=3549CA5618AFC98B65279F4FE668A629)
Becoming a supplier
Share information with PSE to express interest in doing business together.
Potential Suppliers![Transacting via Ariba Network](/-/media/Project/PSE/Portal/ArticleImages/Tile-Transacting-LtTeal.png?h=300&iar=0&w=740&rev=c24253c68a9e4f5c8f59564758d3fb95&modified=20231102210448&hash=2B091038BA6EFBA1B222D57A4EE0E8CB)
Transacting via Ariba Network
Manage your Ariba profile and transact with PSE on orders and invoicing.
Active SuppliersAdditional resources
![FAQ](/-/media/Project/PSE/Portal/Icons/bg-circle-question.png?h=48&&w=48&rev=6e40a1b69cb447a1b5d19d3bafc2c384&modified=20201210223453&hash=74619F87EE69DFA93242377582B0EBB1)
Frequently Asked Questions
Review frequently asked questions for suppliers which include topics such as the supplier registration process, Ariba Network platform, bidding process, invoicing, etc.
![Documentation and links](/-/media/Project/PSE/Portal/Icons/bg-circle-link.png?h=48&&w=48&rev=d4b544b9eecc4bd2bfb14a0c54f318fb&modified=20201210223742&hash=72F8C9777A62AAE94B629548B7308DC6)
Documentation & Relevant links
Central hub for accessing documentation and links relevant to potential and active suppliers of PSE.
![Contact PSE](/-/media/Project/PSE/Portal/Icons/bg-circle-contact.png?h=48&&w=48&rev=a28ed01b604949659ac6f887e24e05ac&modified=20201210223558&hash=DF3BF8BFD957287AF813D1CC05CE19AD)
Contact PSE
Raise questions or issues to PSE regarding registration, Ariba Network, invoicing and payments. Please provide details of your inquiry in the form below.