retrievalMode

The access method to use when retrieving sensitive data from affected S3 objects. Valid values are: ASSUME_ROLE, assume an IAM role that is in the affected Amazon Web Services account and delegates access to Amazon Macie; and, CALLER_CREDENTIALS, use the credentials of the IAM user who requests the sensitive data. If you specify ASSUME_ROLE, also specify the name of an existing IAM role for Macie to assume (roleName).

If you change this value from ASSUME_ROLE to CALLER_CREDENTIALS for an existing configuration, Macie permanently deletes the external ID and role name currently specified for the configuration. These settings can't be recovered after they're deleted.