@MOUROU  Is your NiFi configured to support Oauth2 based user authentication? It looks more like you are using either kerberos-provider or ldap-provider fro user authentication. My suggestion to create a client certificate and use a SSLContext service for client authentication for an automated dataflow like this is because: 1. No need to obtain an token ever. 2. Certs can be created with long expiration time. 3. Tokens are NiFi node specific (same token is not valid for a different NiFi node in a the same NiFi cluster). 4. Same certs works no matter which node in the cluster the invokeHTTP connects with. Matt ... View more