defaultApplicationIdentifier

The unique identifier of the Amazon GameLift Streams application that you want to associate to a stream group as the default application. The application must be in READY status. By setting the default application identifier, you will optimize startup performance of this application in your stream group. Once set, this application cannot be disassociated from the stream group, unlike applications that are associated using AssociateApplications. If not set when creating a stream group, you will need to call AssociateApplications later, before you can start streaming.

This value is an Amazon Resource Name (ARN) or ID that uniquely identifies the application resource. Example ARN: arn:aws:gameliftstreams:us-west-2:111122223333:application/a-9ZY8X7Wv6. Example ID: a-9ZY8X7Wv6.