UnifiedAPI returns errors using a JSON format:
The following successful return codes are common to all requests:
|200||The object of the request is returned.|
|204||There is no object to be returned.|
The following error can occur in all requests:
|501||request_not_implemented||You are not allowed to make the request because the operation is not implemented.|
|400||user_invalid||Value supplied in the URI-Fragment as userId is invalid. The parameter must reference the Id of an user or can be set to @owner, @me or @viewer.|
|401||access_denied||You are not authorized to use this request.|
|400||extension_invalid||Value supplied in the URI-Fragment as extension is invalid. The parameter must reference the number of an existing extension or can be set to @self.|
An internal server error occurred. Please contact the administrator.
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