Enable Single Sign-On for SAP BW
Starting with Tableau 10.2, you can configure single sign-on (SSO) support from Tableau to SAP NetWeaver Business Warehouse (SAP BW). To use this feature, you must install and configure software on the computers that run Tableau Server and Tableau Desktop.
Configuring this feature is a challenge that includes strict version and environment requirements, as well as an SAP engineer to help you be successful.
Requirements and detailed instructions are available in Configure Single Sign-On for SAP BW on Tableau Community.