As per this doc https://www.keycloak.org/docs/2.5/securing_apps/topics/saml/java/jboss-ad... I have installed the file from keycloak --client --.>Insatllation tab--> keycloak SAML Adapter Keycloak-Saml.xml. Copied this file content to wildfly instance's .xml file and Im seeing the below error . 515: | 516: | 517: <sslPolicy="EXTERNAL"> | ^^^^ Illegal to have multiple roots (start tag in epilog?) | | 518: <SP entityID="Sample-app"> | 519: | 520: | | The primary underlying error message was: | > Illegal to have multiple roots (start tag in epilog?). | > at [row,col {unknown-source}]: [517,9] Thanks,