SAP Netweaver - Use web application bridge
To use IBM web application bridge, configure all remote context roots.
For the detailed steps see the documentation for web application bridge.
WAB does not support SAML (Security Assertion Markup Language) unless the SAML token is inside a cookie, and the Portal server and the target server (SAP Netweaver portal in this case) are in the same domain. The client-side cookie forwarding feature can be used in such a scenario. For example, the name of the cookie must be specified in the Policy > HTTP Cookies section of the VWA Manager portlet. To identify the context root on SAP NetWeaver Portal, consult the SAP NetWeaver Portal administrator. Note the context roots depend on the environment and usage scenario. Use the following list as a starting point in a review meeting with the SAP administrator.
/irj
/com.sap.portal.navigation.afp.tln
/com.sap.portal.navigation.afp.resources
/com.sap.portal.navigation.afp.pagetoolbar
/com.sap.portal.navigation.afp.masthead
/com.sap.portal.navigation.afp.layout
/com.sap.portal.navigation.afp.dynamicnavigation
/com.sap.portal.navigation.afp.dtn
/com.sap.portal.epcf.loader
/com.sap.portal.dsm
/com.sap.portal.design.urdesigndata
/com.sap.portal.design.portaldesigndata
/classes
/AFPServlet
/wsnavigator
/webdynpro
/utl
/useradmin
/ur
/sr_central
/rtmfCommunicator
/resources
/nwa
/logon_ui_resources
/js
/irj
/htmlb
/ejbexplorer
/common
/com.sap.ui.lightspeed
/com.sap.portal.runtime.gwtintegration
/com.sap.portal.pagebuilder
/com.sap.portal.navigation.objbased
/com.sap.portal.navigation.helperservice
/com.sap.portal.navigation.contentarea
/com.sap.portal.navigation.afp.widgets