Sends a password-reset confirmation code to the email address or phone number of the requested username. The message delivery method is determined by the user's available attributes and the
AccountRecoverySetting configuration of the user pool.
For the
Username parameter, you can use the username or an email, phone, or preferred username alias.
If neither a verified phone number nor a verified email exists, Amazon Cognito responds with an
InvalidParameterException error . If your app client has a client secret and you don't provide a
SECRET_HASH parameter, this API returns
NotAuthorizedException.
Amazon Cognito doesn't evaluate Identity and Access Management (IAM) policies in requests for this API operation. For this operation, you can't use IAM credentials to authorize requests, and you can't grant IAM permissions in policies. For more information about authorization models in Amazon Cognito, see
Using the Amazon Cognito user pools API and user pool endpoints.
This action might generate an SMS text message. Starting June 1, 2021, US telecom carriers require you to register an origination phone number before you can send SMS messages to US phone numbers. If you use SMS text messages in Amazon Cognito, you must register a phone number with
Amazon Pinpoint. Amazon Cognito uses the registered number automatically. Otherwise, Amazon Cognito users who must receive SMS messages might not be able to sign up, activate their accounts, or sign in.
If you have never used SMS text messages with Amazon Cognito or any other Amazon Web Services service, Amazon Simple Notification Service might place your account in the SMS sandbox. In
sandbox mode, you can send messages only to verified phone numbers. After you test your app while in the sandbox environment, you can move out of the sandbox and into production. For more information, see
SMS message settings for Amazon Cognito user pools in the
Amazon Cognito Developer Guide.