I've been able to retrieve data-sets used by the Google Fit web dashboard via the REST API but any attempts to add new Data Points fails with the below error. I assume this is by design. However, is it possible to create a data-set and have it displayed by the Google Fit default dashboard or must, I create my own web app and just use the google REST API as a means of getting/setting data from my application.
com.google.api.client.googleapis.json.GoogleJsonResponseException: 403
Forbidden
{
"code" : 403,
"errors" : [ {
"domain" : "global",
"message" : "Application package name (com.google.android.gms) provided by un-trusted source.",
"reason" : "forbidden"
} ],
"message" : "Application package name (com.google.android.gms) provided by un-trusted source."
}