Dear Steve,
When I first time set up immi account, after uploading all the docs, it was saying that "Follow next step and arrange your medical health check up" ... I clicked on it and it generated HAP id, which i used for medical check up and the medical center said they will upload it directly in the website ... later after few days I started seeing this message "No health examinations are required for this person for this visa subclass based on the information provided to the Department of Immigration and Border Protection." ...
So I guess its part of the process and nothing to worry about ...
Thanks,
Santy