Select your cookie preferences

We use essential cookies and similar tools that are necessary to provide our site and services. We use performance cookies to collect anonymous statistics, so we can understand how customers use our site and make improvements. Essential cookies cannot be deactivated, but you can choose “Customize” or “Decline” to decline performance cookies.

If you agree, AWS and approved third parties will also use cookies to provide useful site features, remember your preferences, and display relevant content, including relevant advertising. To accept or decline all non-essential cookies, choose “Accept” or “Decline.” To make more detailed choices, choose “Customize.”

Principal - Amazon Lex API Reference

Principal

The IAM principal that you allowing or denying access to an Amazon Lex action. You must provide a service or an arn, but not both in the same statement. For more information, see AWS JSON policy elements: Principal .

Contents

arn

The Amazon Resource Name (ARN) of the principal.

Type: String

Length Constraints: Minimum length of 30. Maximum length of 1024.

Pattern: ^arn:aws:iam::[0-9]{12}:(root|(user|role)/.*)$

Required: No

service

The name of the AWS service that should allowed or denied access to an Amazon Lex action.

Type: String

Length Constraints: Minimum length of 15. Maximum length of 1024.

Pattern: ^[0-9a-zA-Z_.]+$

Required: No

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following:

PrivacySite termsCookie preferences
© 2025, Amazon Web Services, Inc. or its affiliates. All rights reserved.