The State Procurement Board (SPB) invited tenders for the supply and installation of primary and secondary surveillance air traffic control radar systems for the Civil Aviation Authority Zimbabwe. Both the appellant (Selex ES p.A) and second respondent (Indra Sistemas SA) participated in the tender process. The tender documents contained mandatory requirements in Section 4, including that tenderers provide financing options and outright purchase systems with specific repayment plans. Section 5 and 9 provided that non-compliance with mandatory requirements would lead to disqualification. The SPB's own evaluation report found that the second respondent failed to comply with mandatory requirements, specifically regarding the financing proposal - it did not provide a bank guarantee, offered only a 12-month deferred payment instead of the required 5 and 10 year proposals, and submitted non-binding letters of intent rather than firm commitments. Despite this finding, the SPB awarded the tender to the second respondent on the basis of an "outright purchase option." The appellant appealed to the Administrative Court, which dismissed the appeal. The appellant then appealed to the Supreme Court.