You can update the credentials for a previously configured cloud account. This document provides steps on how to update cloud account information in RHA r16.5
If the Access Key ID and Secret Access Key were changed (a new pair was generated and the previous pair was deactivated) using the Amazon Management Console, the AWS account credentials must be manually updated.
1. To update cloud account credential information, select the cloud account in the Cloud View panel that you want to update.
2. click the Update Cloud Account button on the toolbar.
3. Enter the new credentials and click OK.
4. The cloud account information is updated in the Cloud View pane.