SSO pre-validation messages (#628)

src/locales/en/messages.json

@@ -3194,5 +3194,11 @@
   },
   "includeEnterprisePolicies": {
     "message": "Enterprise Policies"
+  },
+  "ssoValidationFailed": {
+    "message": "SSO Validation Failed"
+  },
+  "ssoIdentifierRequired": {
+    "message": "Organization Identifier is required."
   }
 }