Amazon S3 Connector Requirements
Coveo license for the Amazon S3 connector
Your Coveo license must include support for the Amazon S3 connector to be able to use this connector (see What Information Is Displayed in the License Page?).
A valid IAM Account
You need an IAM account with at least the Read permission on the bucket to be crawled.
Create an Amazon S3 field set (see Amazon S3 Connector Deployment Overview).