getAttachmentDownloadLink
Returns a presigned download URL for an attachment that is associated with a case communication. The download link works for an attachment of any size, including attachments added through AddAttachmentsToSet and attachments uploaded through GetAttachmentUploadLinks. The download URL is time-limited and expires at the date and time indicated in the downloadUrl response field. Download the attachment from the URL before it expires.
You must have an Amazon Web Services Business Support+, Amazon Web Services Enterprise Support, or Amazon Web Services Unified Operations plan to use the Amazon Web Services Support API. If you're in an Amazon Web Services Region that doesn't offer one of these Amazon Web Services Support plans, or if you haven't transitioned to one of these plans, you can use the Amazon Web Services Support API with a Business, Enterprise On-Ramp, or Enterprise Support plan.
If you call the Amazon Web Services Support API from an account that doesn't have an Amazon Web Services Business Support+, Amazon Web Services Enterprise Support, or Amazon Web Services Unified Operations plan, the
SubscriptionRequiredExceptionerror message appears. For information about changing your support plan, see Amazon Web Services Support.