Previous versions of the transport automatically created destination queues on send if they weren't available. The automatic creation of destination queues has been removed. Setting up a topology with queues is an operations concern and should happen during the installation phase of the endpoint or via scripting when provisioning the environment.
A new set of permissions is required to run SQS transport. The following permissions must be granted to run the SQS transport.
When the transport is used in combination with large messages on S3 the following permissions are required