how to interpret ERROR_UNSUPPORTED_NAMESPACE on getGroups? - sonos

Question

I'm troubleshooting some errors from the Sonos API, where calls to getGroups result in HTTP 404. Here's a sample response:
{
"errorCode": "ERROR_UNSUPPORTED_NAMESPACE",
"reason": "Unexpected error"
}
And here's the corresponding request (with token and household_id redacted):
curl -H "Authorization: Bearer <token>" "https://api.ws.sonos.com/control/api/v1/households/<household_id>/groups"
This error is happening repeatedly for this particular token, which otherwise appears correct and was used to retrieve the household_id used above.
For most users, the same code path and request yields HTTP 200 and a collection of players and groups.

Answer 1

I'm getting the exact same error for 2 users and I can't replicate it on my end.
The documentation says;
When your app sends a namespace that is not recognized by the player,
you’ll receive an ERROR_UNSUPPORTED_NAMESPACE error response. Note
that namespaces are case-sensitive.
For example, if you misspelled the namespace, the player responds with
an ERROR_UNSUPPORTED_NAMESPACE in the global namespace:
{ "errorCode": "ERROR_UNSUPPORTED_NAMESPACE" }
https://developer.sonos.com/reference/types/globalerror/
Like you, I have not spelled anything incorrectly and as its working correctly for the vast majority of users. Again, I can get households for these particular users but not groups.
I am at a complete loss but if I find out the reason I'll follow up.
Thanks, Paul