IEC 63119-1:20 19为IEC 63119的其他部分奠定了基础，规定了电动汽车充电服务提供商（CSP）、充电站运营商（CSO）和清算所平台之间通过漫游端点漫游的术语和定义、系统模型的一般描述、分类、信息交换和安全机制。它提供了EV漫游服务系统的概述和一般要求。 IEC 63119（所有部分）适用于不同CSP之间以及CSP和CSO之间通过漫游端点的信息交换/交互中涉及的高级通信，无论是否具有交换所平台。 IEC 63119（所有部分）没有规定充电站（CS）和充电站运营商（CSO）之间或EV和CS之间的信息交换。

IEC 63119-1:2019 establishes a basis for the other parts of IEC 63119, specifying the terms and definitions, general description of the system model, classification, information exchange and security mechanisms for roaming between EV charge service providers (CSP), charging station operators (CSOs) and clearing house platforms through roaming endpoints. It provides an overview and describes the general requirements of the EV roaming service system.
IEC 63119 (all parts) is applicable to high-level communication involved in information exchange/interaction between different CSPs, as well as between a CSP and a CSO with or without a clearing house platform through the roaming endpoint.
IEC 63119 (all parts) does not specify the information exchange, either between the charging station (CS) and the charging station operator (CSO), or between the EV and the CS.