Setting Up SAP Event Mesh - Integration Suite for Real-Time Event-Driven Communication

This article provides a step-by-step guide to setting up SAP Event Mesh – Integration Suite (EMIS) for real-time event-driven communication between SAP S/4HANA Public Cloud and Cloud Integration. The guide covers prerequisites, detailed steps, and solution diagrams. It is intended for those new to SAP's Event-Driven Architecture or looking to integrate cloud systems in a more responsive and scalable way.

In the ever-evolving landscape of enterprise software, real-time event-driven communication is becoming increasingly critical. SAP Event Mesh – Integration Suite (EMIS) offers a robust solution for enabling such communication between SAP S/4HANA Public Cloud (S4HC) and Cloud Integration. This step-by-step guide is designed for both newcomers and seasoned professionals looking to integrate cloud systems in a more responsive and scalable manner.

Prerequisites

Before diving into the setup, ensure you meet the following prerequisites:
- Subscription to the SAP Integration Suite standard or premium editions.
- Removal of any standalone Event Mesh (Default Plan) instances from your subaccount.
- Integration Suite service should already be subscribed to in the subaccount.
- Integration Suite Event Mesh entitlement added in the Global account.

Detailed Steps

1. Access Integration Suite Instance
- Log in to the BTP Tenant’s Integration Suite instance.
- Navigate to "Manage Capabilities" and add the required capabilities.
- Activate the Event Mesh capability.

2. Assign Necessary Roles
- Go to the BTP Subaccount and access the "Security - Users" option.
- Search for your user and assign the Event Mesh-specific roles.

3. Configure Events
- Refresh the Integration Suite screen to see the hyperlinks for "Configure Events" and "Monitor Events."
- Click on "Configure Events" and activate the Event Mesh capability.

4. Create a Queue
- Go to the Queues tab and create a new queue.
- Name the queue appropriately and create it.

5. Set Up Messaging Client
- Create a Messaging Client in the BTP Subaccount to receive messages from Topics in S4H Public Cloud.
- Create a space named "INTEGRATION_TOOLS" (or any other name of your choice).

6. Create Event Mesh Instance
- Create an instance of Event Mesh, selecting the "SAP Integration Suite, Event Mesh" service.
- Note the Instance Name for later configurations in S4HANA Public Cloud.

7. Configure Communication Arrangement
- Open the Communication Arrangements app in S4HCloud and create a new arrangement.
- Use Scenario 0092 for Enterprise Eventing Integration.
- Add a namespace field with the value "em/client/s4h" and create the arrangement.

8. Add Outbound Topic Bindings
- Go to the "Enterprise Event Enablement (Configure Channel Bindings)" app.
- Click on the channel "EMIS_0092" and create outbound topic bindings for the relevant events.

9. Subscribe to Topics
- In BTP, go to the Queue tab and subscribe to the topics using the format "namespace + /ce + /topic name."

10. Configure Webhooks
- Go to the Overview tab of Event Mesh and configure the Message Client "em-client-s4h."
- Use the provided HTTP CPI iFlow Endpoint as the Webhooks URL.

Conclusion

By following these steps, you can successfully set up SAP Event Mesh – Integration Suite (EMIS) to enable real-time event-driven communication between SAP S/4HANA Public Cloud and Cloud Integration. This setup allows for a more responsive and scalable integration, crucial for modern enterprise operations.

References
[1] https://community.sap.com/t5/technology-blog-posts-by-members/setup-event-mesh-integration-suite-emis-to-trigger-events-from-s4h-cloud-to/ba-p/14151999