To enable an external application, such as the SAP Business Accelerator Hub's test environment, to communicate with an SAP S/4HANA Cloud system, you must configure the communication management framework. This involves two primary creation steps. First, you create a Communication System, which represents the external system making the API call. Second, you create a Communication Arrangement, which links the Communication System to a specific, pre-delivered Communication Scenario (containing the API you wish to test). This arrangement activates the API endpoint and establishes the authentication method for that specific system.

C. A communication scenario: This is a design-time object delivered by SAP that bundles related APIs. You select an existing scenario, you do not create one to perform a test.

D. An API: The API is the object you intend to test; it is already provided by SAP within the S/4HANA Cloud system. You do not create the API itself for this purpose.

1. SAP Help Portal

SAP S/4HANA Cloud 2408

"Communication Management": This section details the overall process. It states

"To enable communication

you need to perform the following steps: 1. Create a communication user. 2. Create a communication system. 3. Create a communication arrangement." This confirms the necessity of creating both a system and an arrangement. (See documentation for the "Communication Management" apps).

2. SAP Help Portal

SAP S/4HANA Cloud 2408

"How to Create a Communication System": This guide explicitly describes the procedure for creating a communication system

which is a prerequisite for a communication arrangement. It defines a communication system as a representation of the communication partner.

3. SAP Help Portal

SAP S/4HANA Cloud 2408

"How to Create a Communication Arrangement": This document outlines the process of creating the arrangement and states

"A communication arrangement is a runtime object of a communication scenario for a specific communication partner." This highlights that it connects the system (partner) with the scenario.

4. openSAP Course: "Getting Started with SAP S/4HANA Cloud Extensibility": In Week 2

Unit 3

"Communication Management

" the learning material presents the end-to-end process for exposing an API

which explicitly includes the creation of a Communication System and a Communication Arrangement as mandatory steps performed by the administrator.