In integrating SAP S/4HANA Cloud Public Edition systems, Communication Management plays a critical role in securely exchanging data. This blog explains how to configure communication between two SAP S/4HANA Cloud Public Edition systems using standard SAP communication scenarios. The blog is co-written with @Karunaharan.
- Access to the source/sender SAP S/4HANA Cloud Public Edition system.
- User must have the role, ADMINISTRATOR.
- Target SAP S/4HANA Cloud Public Edition system details, such as Host Name, Logical System, and Business System.
Use the “Maintain Communication Users” app to create a technical communication user. Make sure to provide a username and password, as both are required. Ensure that the same user is also created in the target system. This user will be used for sending and receiving data.
1. Open the Maintain Communication Users app.
2. Choose New.
3. Enter a valid username and description.
4. Either provide a password (basic authentication) or upload certificates for certificate-based authentication.
5. Choose Create to save the new user.
OAuth or Client Certificate can be used if required.
To enable communication between two systems, you must register these systems in the Communication Systems app (that is, register the target system in the source and vice versa.
For inbound communication, your registered system calls the services provided by SAP S/4HANA Cloud Public Edition. For outbound communication, your registered system provides the services called by SAP S/4HANA Cloud Public Edition.
1. Open the Communication Systems app.
2. Choose New
3. Provide an ID and a name for your system.
4. On the General tab, under the Technical Data section, enter the Host Name, Logical System, and Business System details of the target system.
5. In the Users for Inbound Communication tab, choose Add (+)
a. In the New Inbound Communication User dialog box, enter the username and authentication method.
(created in Step 1: Create A Communication User)
b. Click on Ok Button.
6. In the Users for Outbound Communication tab, choose Add (+)
a. In the New Outbound Communication User dialog box, for the Authentication Method field, choose Username and Password (the same user must be added as an inbound user in the target system).
b. Click on the Create Button.
7. Click on the Save Button.
1. Open the Communication Arrangements app.
2. Choose New.
- Select the scenario SAP_COM_0008.
- Provide a name for the communication arrangement.
- Choose Create.
3. In the Common Data section, select the communication system
(created in Step 2: Create A Communication System)
4. Activate SOAP services using the “Service Status” checkbox.
5. Maintain Replication Model, Replication Mode, and Output Mode. More information about these properties is available subsequently.
6. Click on the Save Button.
7. Use the “Check Connection” button to verify connectivity between systems
More Properties in the Outbound SOAP Service
Replication Modes
Initial Replication: Replicates all existing data from the source to the target system.
Change Replication: Only the changes made in the source system will be replicated to the target system.
Output Modes
Direct: Replication happens immediately after saving the changes made to the Business Partner object..
Pooled: Replication occurs periodically. In this case, only the Business Partner objects are replicated without unchanged relationships.
System Filter
System Filter controls the data transferred between systems. It allows only certain data to be copied or synchronized based on specific conditions.
For example:
- Transfer only certain types of data (like sales orders or customer data).
- Limit the data based on specific attributes (like a region or department).
Data Controller and Purpose
Defines the responsibility and purpose of data usage to ensure compliance with data protection regulations. The combination of data controller and purpose must be the same in both source and target systems.
Integration with C4C Enabled
Enables integration-specific services required for SAP C4C integration.
SOAP Compatibility Mode
Ensures compatibility with SOAP-based services and avoids message processing errors.
Following these steps ensures a secure and reliable integration between two SAP S/4HANA Cloud Public Edition systems using standard communication scenarios.
