Radius Accounting monitor sending special character in radius acct-session-id

Hi,

I'm having an issue with RADIUS server not able to interpret the acct-session-id sent by F5 monitoring probes. For some accounting-request, F5 sends special character in the acct-session-id while sometime it just send single alphabetic letter. Is it possible to stop sending special character in radius acct-session-id?

e.g. radius.Acct_Session_Id = \030 - bad request e.g. radius.Acct_Session_Id = Q - good request

Thanks, Mittal