OptionalcallidThe unique ID assigned to this call.
OptionalcustomAn optional parameter containing notification-specific information.
OptionalerrorThe error code of the error.
OptionalerrorThe error message of the error.
OptionaleventMust have the value notify.
OptionaltypeThe type of information communicated in the notification. Must have the value callingerror.
OptionaluserThe user ID that initiated the call.
OptionalversionThe current API version.
The request body of Notify Event notifying of an error.