The server where the SAP User Management driver is installed must have the SAP Java* Connector (JCO) client version 3 installed to provide the driver with connectivity the SAP system. The updated SAP User Management driver that comes with the extension for SAP environments only supports JCO version 3.
This JCO client is available to SAP customers and developer partners through SAP, and is provided for most popular server operating systems. You can download the JCO from the SAP Connectors site.