CreateObersver duplicated keys error

[peterdudfield]

version: 0.1.1
Currently if we try to create a observer with a duplicate key, we get the error
Invalid observer name. Ensure it is not empty and is lowercase', None)
however in the server we have the error

    "level": "error",
    "method": "CreateObserver",
    "error": "ERROR: duplicate key value violates unique constraint \"observers_observer_name_key\" (SQLSTATE 23505)",
    "time": "2025-10-30T13:25:44Z",
    "message": "querier.CreateObserver({ObserverName:pvlive-consumer-day-after})"
}

I think it would be good to get that back in the python dp-sdk package

[peterdudfield]

I understand that there is a difference in the internal and external logs. I wonder just if the external logs could be saying somthing like

Tried to create a new Observer, but couldn't. This could be for multiple reasons, e.g. the name is invalid (Ensure it is not empty and is lowercase), or the Observer already exists. 

This might help the python developer know what might be the reasons

[devsjc]

I think similar to this issue, we can just add unique as a potential cause. In fact, I might just add this to that issue!

[devsjc]

I have added it to that issue. Thanks for flagging this!