The 3PL contract has to define:

the logistics service the kind of products handled and the extension conditions in the other products categories the service's execution modalities and the operator responsibilities the service capacity (of warehousing, transportation...) implemented and its extension conditions the terms of stock management, inventory modalities and discrepancies imputation rules the consumables management the quality management and related bonus / malus system the tariff and its revision conditions the terms of payment the access to information system and data protection conditions the confidentiality the force majeure the modalities of contract follow-up the insurances and responsibilities the starting up and the duration the renewal and termination conditions