Raised whenever the requested operation is not permitted.
Possible Causes
Your Account has been suspended and an asynchronous request has been canceled.
While sending Commands to your SIM, your Command was rejected by its Rate Plan.
While transferring your SIM to another Account, your request was rejected because the SIM must be new and the new Account must either be the requesting Account or a Subaccount of the requesting Account.
Possible Solutions
While sending a Command, ensure the Rate Plan associated to the given SIM has Commands enabled.
Contact Twilio Support to help with the SIM transfer.