Outbound Communication from Cloud to On-Premises in S/4HANA Cloud

Every business requires real-time communication and regular data updates. Enterprises that work partly on on-premises SAP S/4HANA and partly on the cloud need to be in complete synchronisation to ensure the data is updated regularly. This article has compiled the list of steps that need to be completed to ensure outbound communication between the two systems once migration to S/4HANA is complete.

Steps for outbound communication

Step 1: Set up SAP Cloud Connector

SAP Cloud Connector is used to secure a connection between a computer and a SAP Cloud. To set up SAP Cloud Connector, access the port defined and use the username “Administrator” and password to log in. Set up a proxy internet connection. Once the setup is done, you can log in using either a trial account of SAP Platform or your actual SAP Platform account. Once the login is complete, you must select “add cloud to on-premise SAP” using the (+) sign on the right-hand side. Add the necessary details, and the setup is complete.

Step 2: Set up a virtual host for SAP S/4HANA on-premise API

Ensure the SAP Cloud Connector is operational before starting the process. You can ensure the connection using your SAP business technology platform (BTP) account. Once the connector is operational, log into your SAP BTP account and select “Connectivity”. Visit the “SAP Cloud Connector” subsection to verify the connection.

Step 3: Create communication systems for the BTP subaccount

Log into your SAP S/4HANA Cloud account and select “communication systems” from the menu. Select “new” and create a new communication system name, use “BTP_Connection” in both fields. When directed to the technical section, use hana.ondemand.com, hanatrail.ondemand.com, or sandbox.api.sap.com as the UI hostname. Scroll down to “outbound users” and add another user using the (+) button. Select authentication method as “none” and finish user creation.

Step 4: Enable communication arrangement in SAP S/4HANA Cloud system

Go to “Home” of the launchpad and select “Custom communication arrangements” from the menu. Select “New communication arrangements” from the submenu. In the given two fields add, “SAP_COM_0200” in both fields. Select create. Select “Add properties”and use the technical information from your sub account to complete the required fields. Once the fields are complete, click on the button “save”.

Step 5: Create a custom communication scenario for calling SAP S/4HANA

Go to the menu of your launchpad and select “Custom communication scenarios”. Create a new communication scenario and use a communication read ID and description to set up the new scenario. Select the “Outbound services” tab and describe the popup. Also, add the URL path to the required document(s) or location. Select “Publish”. Your custom communication scenario is live.

Step 6: Create a communication system with credentials for SAP S/4HANA on-premise user

Go to the menu of your launchpad and select “Communication systems”. Create a new communication system with the required System ID and name. When redirected to the technical section, use the host credentials used in Step 2. Maintain all the details correctly, including SCC location ID and ID of SAP Cloud Connector. Select “Save” to create the system.

Step 7: Create a communication arrangement for custom communication arrangement

Go to the menu of the launchpad and select “Communications arrangement”. Select “New” and search for the scenario name created in Step 4. Select “Create” and use the technician information from Step 6 to complete the required fields when redirected. Select “Save”, and the setup is complete.

Bottom Line

Setting up outbound communication from the cloud to the on-premise S/4HANA cloud is a relatively simple process. It depends on the SAP cloud connector and creating a virtual host. New communication systems and arrangements need to be created for an outbound user from the SAP BTP account for the connection. The process can be completed when you partner with the right SAP service partner, like Epnovate.

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