Semantic Convention : Application attributes

[adelbot]

Is there a prefix or standards for application level attributes?

As in Elastic Common Schema, are there prefixes like fields., labels. to allow to put free attributes

As exemple, how named a attributes like application code or application name ?

[cartermp]

It's not official per spec, but in the OTel demo -- which is intended to be a canonical implementation -- the app. prefix is used for attributes within an application, like so: https://github.com/open-telemetry/opentelemetry-demo/blob/7543c595d9e43cda0433bf8461940022152f302f/src/quote/app/routes.php#L32