contractReference field in the nomination’s delivery details.
Contracts are idempotent on reference (alphanumeric and hyphens only, at most 100 characters). A contract has a name, an optional external reference, an optional type (term or spot) and price type (floating or fixed), optional UTC start and end dates, and optional scoping lists: supplier entity references, port UN/LOCODEs, counterpart company identifiers, and counterpart entity references.
Counterpart entities are also idempotent on reference. email must be a valid email address (at most 320 characters) and phoneNumber may contain only digits, spaces, and the characters + - ( ). The returned shapes are documented on the Get Company Entities and Get Counterpart Entities reference pages.