Mediapackage DASH Manifest does not has Role tag in it

Mediapackage VOD,DASH Output does not has Role tag in it for Multi Audio asset.

Why is that so ? This is an very important tag that must be present in the manifest,MediaPackage does not put this tag in the manifest for Multi-audio/multi-lingual asset. Why is that so ?

Missing tag in the Manifest - <Role schemeIdUri="urn:mpeg:dash:role:2011" value="main"></Role>