Where a purchaser concludes a contract intended to satisfy objectively indissociable requirements which are subject, on the one hand, to the ordinary law on contracts provided for in Book I of this Part and Book II thereof relating to partnership contracts and, on the other hand, to the special legal regime applicable to other public contracts in Book V or Book II of Part III, this contract is subject to the provisions applicable to its main purpose.
Where the main purpose of the contract cannot be objectively identified, the contract is subject to the general contract law set out in Book I and Book II relating to partnership contracts of this Part.