issue with reject function while handling interim-update accounting

[Vinayak Makwana]

Hello all,
             I am facing an issue in the accounting section. I do work on
freeradius accounting to handle START, STOP and INTERIM-UPDATE requests. So
in an interim-update request I am getting every 1 minute. In that request i
am checking user balance if user balance is not sufficient then i am using
reject function to send reject request to client. but when I do use the
reject function then this function directly rejects the interim-update
request without sending access-reject  to the client.
         File : sites-available/default
          Here's my code :
#########################################################

accounting {

if(Acct-Status-Type == "Interim-Update"){

                                        if ("%{user_balance}" == 0) {

                                                reject

                                        }



        }

}

#########################################################

Please suggest to me how I can send access-reject messages to client-server.



Thanks & Regards
Vinayak

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