Suppliers Sibanye-Stillwater has selected the "Ariba" platform for collaboration and trading with suppliers. This allows Sibanye-Stillwater to capture supplier registration details, source new products and services from suppliers and enable electronic trading on the world's largest web-based trading network. Ariba Platform Register or login to the Ariba platform. Contact Supply Chain Contact details for assistance with usernames, passwords, access, system functionality, supplier approvals, application status, accreditations, payments and transactional buying. Terms and conditions As part of the Ariba registration process, suppliers will be required to accept a number of terms and conditions. Please ensure that you have familiarised yourself with these terms and conditions prior to registration.