s3/aws.sdk.kotlin.services.s3.model/Initiator/id

id

If the principal is an Amazon Web Services account, it provides the Canonical User ID. If the principal is an IAM User, it provides a user ARN value.

Directory buckets - If the principal is an Amazon Web Services account, it provides the Amazon Web Services account ID. If the principal is an IAM User, it provides a user ARN value.