diff --git a/src/middlewares/auth.ts b/src/middlewares/auth.ts
index 5aecde8..783e933 100644
--- a/src/middlewares/auth.ts
+++ b/src/middlewares/auth.ts
@@ -10,8 +10,14 @@ export async function expressAuthentication(
 ) {
   switch (securityName) {
     case "keycloak":
-      return keycloakAuth(request, scopes);
+      const authData = await keycloakAuth(request, scopes);
+      request.app.locals.logData.sessionId = authData.session_state;
+      return authData;
     default:
-      throw new HttpError(HttpStatus.NOT_IMPLEMENTED, "Unknown how to verify identity.", "unknowHowToVerify");
+      throw new HttpError(
+        HttpStatus.NOT_IMPLEMENTED,
+        "Unknown how to verify identity.",
+        "unknowHowToVerify",
+      );
   }
 }
diff --git a/src/middlewares/log.ts b/src/middlewares/log.ts
index 5e8eb01..d7ab8db 100644
--- a/src/middlewares/log.ts
+++ b/src/middlewares/log.ts
@@ -1,5 +1,6 @@
 import { NextFunction, Request, Response } from "express";
 import elasticsearch from "../services/elasticsearch";
+import { randomUUID } from "crypto";
 
 if (!process.env.ELASTICSEARCH_INDEX) {
   throw new Error("Require ELASTICSEARCH_INDEX to store log.");
@@ -50,7 +51,7 @@ async function logMiddleware(req: Request, res: Response, next: NextFunction) {
       host: req.hostname,
       sessionId: req.headers["x-session-id"],
       rtId: req.headers["x-rtid"],
-      tId: req.headers["x-tid"],
+      tId: randomUUID(),
       method: req.method,
       endpoint: req.url,
       responseCode: res.statusCode,