You are setting Communication Arrangement Scenario SAP_COM_0273 following the documentation instrunctions from the link below:
How to set accordingly step 8, that ask for the following information: Connection Name, Schema Name, Description and Service ID.
- S/4HANA Cloud
- Communication Arrangement
- Connection name, schema name, description and service ID has to be entered while creating communication arrangement. Connection name, schema name and description are free text where schema name should not exceed 30 characters and the description should not exceed 60 characters;
- You get Service ID information when HANA as a Service instance is created.
CDS Views, Replication, Integration , KBA , CA-GTF-EI-VP-OR , View Provisioning: Orchestration , How To