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Voice SDK Error Codes

The majority of Programmable Voice error codes are five-digit integers starting at the 31000 range.

To get details on an error code, possible cause, and solutions, please visit the full Error and Warning Dictionary.

Note on JavaScript SDK Errors:

The JavaScript SDK, when applicable, will emit errors that contain a twilioError field. To view implementation information, visit the error handling sections of the Connection Reference Page's and the Device Reference Page.

This twilioError is the new TwilioError format that is now the default Error format in the new 2.0 version of the SDK. Please see the JavaScript SDK 2.0 Migration Guide for more information on this change.

Common Errors

310xx 番台 : 一般エラー

Code 概要
31000 General Twilio Client error. More information may be available in the debugger. The twilioError field (JavaScript SDK only) may contain more information.
31001 TwiML Application not found.
31002 接続拒否。原因の詳しい情報はデバッガーをチェックして下さい。
31003 コネクションタイムアウト
31005 WebSocket connection to Twilio's signaling servers were unexpectedly ended. If this is happening consistently, there may be an issue resolving the hostname provided. If a region is being specified in Device setup, ensure it's a valid region.
31009 No transport available to send or receive messages.

311xx 番台 : 不正なリクエスト

Code 概要
31100 一般的な不正な形式のリクエスト
31101 リクエスト中にパラメーターの配列がありません。
31102 リクエスト中に認証トークンがありません。
31103 パラメーターの長さが MAX_PARAM\_LENGTH を超えることはできません。
31104 無効なブリッジトークン
31105 Invalid client name/identity. Note, the client/device name/identity provided in the AccessToken may only contain alpha-numeric and underscore characters. Other characters, including spaces, will result in undefined behavior. The maximum number of characters for the identity is 121.

312xx 番台 : 認証エラー

Code 概要
31201 一般的な不明なエラー
31202 JWT シグネチャのバリデーションに失敗しました。
31203 有効なアカウントがありません。
31204 無効なJWT トークン
31205 JWT token 有効期限切れ
31206 APIリクエスト頻度が高すぎます。
31207 JWT トークンが有効期限が長すぎる
31208 ユーザーがマイクへのアクセスを拒否しました。

53xxx Series: Signaling Errors

Code 概要
53405 Media connection failed/Media activity ceased: The ICE connection failed
53000 Signaling connection error: The websocket timed out in preflight
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