update configuration

config/config.js

 module.exports = {
-    development: {
-      passport: {
-        strategy: 'saml',
-        saml: {
-            path: process.env.SAML_PATH || '/saml/SSO',
-            entryPoint: process.env.SAML_ENTRY_POINT || 'https://m4lab.hft-stuttgart.de/idp/saml2/idp/SSOService.php',
-            issuer: 'sp-account.m4lab.hft-stuttgart.de', //local metadata
-            logoutUrl: 'https://m4lab.hft-stuttgart.de/idp/saml2/idp/SingleLogoutService.php'
-        }
+  development: {
+    passport: {
+      strategy: 'saml',
+      saml: {
+          path: process.env.SAML_PATH || '/saml/SSO',
+          entryPoint: process.env.SAML_ENTRY_POINT || 'https://m4lab.hft-stuttgart.de/idp/saml2/idp/SSOService.php',
+          issuer: 'sp-tv3.m4lab.hft-stuttgart.de',
+          logoutUrl: 'https://m4lab.hft-stuttgart.de/idp/saml2/idp/SingleLogoutService.php'
       }
-    },
-    test: {
-        passport: {
-            strategy: 'saml',
-            saml: {
-                path: process.env.SAML_PATH || '/saml/SSO',
-                entryPoint: process.env.SAML_ENTRY_POINT || 'https://m4lab.hft-stuttgart.de/idp/saml2/idp/SSOService.php',
-                issuer: 'sp-account-testing.m4lab.hft-stuttgart.de', //testing metadata
-                //issuer: 'sp-account-prod.m4lab.hft-stuttgart.de', //production metadata
-                logoutUrl: 'https://m4lab.hft-stuttgart.de/idp/saml2/idp/SingleLogoutService.php'
-            }
-        }
     }
-  };
-  
\ No newline at end of file
+  },
+  test: {
+    passport: {
+      strategy: 'saml',
+      saml: {
+          path: process.env.SAML_PATH || '/saml/SSO',
+          entryPoint: process.env.SAML_ENTRY_POINT || 'https://m4lab.hft-stuttgart.de/idp/saml2/idp/SSOService.php',
+          issuer: 'sp-tv3-testing.m4lab.hft-stuttgart.de',
+          logoutUrl: 'https://m4lab.hft-stuttgart.de/idp/saml2/idp/SingleLogoutService.php'
+      }
+    }
+  }
+};