Use
IDoc interface tools developed are used to define new IDoc types. The documentation tools are used to display the business structure of IDoc types as well as their technical structure in different formats. They help to determine whether new IDoc types really have to be defined or whether the types provided in the standard system are sufficient for your needs. They also help to automate the process of defining IDoc types in external systems.
Features
Structure of an IDoc Documentation Tools Defining New IDoc Types