Custom connector error with scheduling refresh

[jeremyfisher]

I have a custom connector which is authenticated via OAuth and it talks to a REST service to load data. In Power BI Desktop everything works fine. I setup the data gateway and under the Connectors it found my connector. So I published from Desktop to my workspace. When I select schedule refresh, I'm presented with the "Discover Data Sources" link and so I click that. I then get an error about there being an unsupported function Resource.Access. As far as I'm aware, I'm not using Resource.Access (searching for it in the custom connector pq file returns no results).

What does this error actually mean? I have the TestConnection defined which seems to be the problem for most of the posts that I can find on this.

[v-rzhou-msft · Accepted solution]

Hi @jeremyfisher ,

Please refer this document.

Troubleshooting unsupported data source for refresh

And compare the provider with the list of supported data sources found in Power BI data sources.

If that warning is present in the Data Source Settings dialog that appears, then a dynamic data source that cannot be refreshed in the Power BI service is present.

For reference: Refresh and dynamic data sources

And you may refer to this blog and have a try, maybe it could help you solve your problem.

For reference: How to refresh report that uses custom functions on Power BI Service?

Best Regards,
Rico Zhou

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[jeremyfisher]

Specifically this part was helpful with resolving:

    For reference: Refresh and dynamic data sources