kmsKeyId

The Amazon Resource Name (ARN), ID, or alias of the KMS key to use to encrypt sensitive data that's retrieved. The key must be an existing, customer managed, symmetric encryption key that's enabled in the same Amazon Web Services Region as the Amazon Macie account.

If this value specifies an alias, it must include the following prefix: alias/. If this value specifies a key that's owned by another Amazon Web Services account, it must specify the ARN of the key or the ARN of the key's alias.