Searchable snapshots in AWS opensearch

Hi , I have created a domain in aws with opensearch 2.7 . There are couple of concerns

1. The node roles do not have search role by default and since we dont have yaml , i am not able to change that .
2. Even if i ignore point 1 and try to restore a snapshot , the following error pops up. I was under the assumption that in opensearch 2.7 searchable snapshots are of production ready . { "error": { "root_cause": [ { "type": "illegal_argument_exception", "reason": "Unsupported parameter storage_type. Feature flag is not enabled for this experimental feature" } ], "type": "illegal_argument_exception", "reason": "Unsupported parameter storage_type. Feature flag is not enabled for this experimental feature" }, "status": 400 } Any help with regards to how can i achieve searchable snapshots in aws opensearch would be helpful. Thanks!