To be able to enter tenders and agree contracts with SBB via the new system, as a supplier, you have to both register and qualify. The products or services that SBB purchases from you are assigned to purchasing categories. You can qualify for a purchasing category by providing evidence (e.g. ISO certification) as part of qualification questionnaires. If the same evidence is required for more than one purchasing category, this is dealt with in the same questionnaire and therefore it must only be completed and submitted once. Qualification for a purchasing category is successfully completed if all relevant questionnaires have been approved.