This document discusses the "fit for purpose" obligation in international arbitrations. It defines "fit for purpose" as an implied obligation for goods to be suitable for the intended purpose. The obligation is addressed in sale of goods acts and the CISG. For services, providers must exercise reasonable skill and care. In design-build contracts, the contractor assumes responsibility for both design and construction being fit for purpose. Arbitrators must consider how the purpose is defined in the contract and look to case law and standard contracts for guidance when determining issues related to fit for purpose obligations.