The Guidelines on Trader Identification Number (TIN) provide technical standards and guidance for establishing a globally unique TIN for the exchange of AEO master data and the efficient identification of economic operators. The Guidelines will assist with the successful implementation of AEO-MRAs in a standardized and harmonized manner in order to avoid disparate approaches that would have IT and cost implications. Though the Guidelines had been developed to primarily support AEO-MRA implementation, they could equally be applied in the context of any cross-border exchange of data of economic operators for other business processes, for example mutual recognition of controls, enforcement, and mutual recognition of authorized operators/trusted operators.