No RFC authorization for user PIDIRUSER

Dear Experts,

We have got a fresh installation of PI 7.4 system, dual stack.

Getting the below cache issue when activating the objects in ID(Dev Env).

"Unable to notify Integration Server affected by data changes HTTP connection  to http://host:5xxxx/sap/xi/cache?sap-client=110 returns status code '500'  (Exception during cache refresh : No RFC authorization for PIDIRUSER.) in reponse"

1) Have configured the IS_URL to http://host:5xxxx/sap/xi/cache in sxmb_adm

2) Have given the below roles to PIDIRUSER

          SAP_XI_ADMINISTRATOR_J2EE

          SAP_BC_WEBSERVICE_PI_CFG_SRV

          SAP_SLD_CONFIGURATOR

          SAP_XI_ID_SERV_USER

          SAP_XI_ID_SERV_USER_MAIN

Attached is the log screenshot when I tested(F7) in sxi_cache t-code of PI ABAP stack.

Also I'm getting an HTTP response 400 when I'm trying to test the service sap-->xi-->cache in sicf t-code.

May I please request you to know if I have missed anything over here.

Thanks,

Prajwal