Communication User

The concept name was not provided, but based on the sources — which cover SAP BTP communication management topics such as communication arrangements, communication users, technical users, and authentication — a Communication Arrangement is a configuration object that defines the technical connection between an SAP system and an external communication partner. A developer or administrator uses it to grant authorizations and set up authentication for inbound or outbound integrations, linking a communication scenario with a communication user and the relevant system credentials.