ISO/IEC 15459-1:2014规定了用于识别单个运输单元的唯一字符串。该字符串用于在条形码标签或附加到实体的其他AIDC介质中表示，以满足管理需要。为了满足管理需求，ISO/IEC 15459的不同部分中识别了不同类型的实体，允许通过与每种类型相关联的身份满足不同的要求。 单个运输单位的唯一标识规则，用于识别物理物流转移，以及与装载物中的一个或多个项目作为该装载物的一部分被持有或运输的持续时间相关的标识，由示例定义和支持。

ISO/IEC 15459-1:2014 specifies a unique string of characters for the identification of individual transport units. The character string is intended to be represented in a bar code label or other AIDC media attached to the entity to meet management needs. To address management needs, different types of entities are recognized in the various parts of ISO/IEC 15459, which allows different requirements to be met by the identities associated with each type. The rules for the unique identification for individual transport units, to identify physical logistical transfers, with the identity relevant for the duration of one or more items in the load being held or transported as part of that load, are defined and supported by example.