Connecting on-prem clients to SAP
The Celonis on-prem client needs to establish a connection to the SAP system and be able to make RFC calls. For this purpose, we use an industry-standard library - The SAP Java Connector (SAP JCo), which is maintained and published by SAP. The JCo library should be downloaded and set up separately.
To connect to SAP:
- Download the respective package from the SAP Marketplace. - Note - Only SAP Service User (S User) can download software from SAP portals. Usually, a customer's SAP BASIS has this access. - The downloaded jco folder already contains two files: a Java part “sapjco3.jar”, and an operating system-specific part e.g. sapjco3.[.dll | .so | .sl ]. 
- Copy the Library files directly into the external folder located at - {installation_folder}/shared/libraries/external- The Celonis Agent is configured to read the library from this directory. - Note - After setting up the jco, the Windows Service Celonis Agent needs to be restarted for the jco related changes to take effect.