# FAQ and Troubleshooting

## Data can't be fetched and the response is error 404 or error 405

One possible problem of an error 404 response is a wrong URL configuration. Please check that your URL is like described in [Get Data from Senseforce API](/manual/sf-platform/public-api/endpoints.md#get-data-from-sensforce-api)

## Data can't be fetched and the response is error 401

If you get error 401 as a response then you probably have an authentication issue. Please check if your used API access token is correct. How to get an API access token you can find [here](/manual/sf-platform/public-api/get-your-access-token.md#getting-your-access-token).

## Data can't be fetched and the response is error 500

There are two common cases that can cause an error 500 response:

1. You have two columns in your dataset with identical names
2. For at least one of the columns in the dataset "show data" is disabled

Both cases can't be handled, so you either have to remove or change these columns.


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