In order to elicit the basic data for ITER cost estimates, about 85 "procurement packages"
have been developed for the elements of the project work break down structure (WBS), each
defined at a level consistent with a plausible procurement contract.

Each package comprises comprehensive information, including the functional requirements, detailed designs, specifications, interfaces and other relevant data that would be needed by potential suppliers
in order to prepare for contract quotations, e.g. the proposed split of responsibilities between
supplier and customer and the necessary QA arrangements.