@Jamie - Thanks for the question and using MS Q&A platform.
It seems like you are receiving a 403 error when trying to preview data from your REST API source in Azure Data Factory. This error indicates that you do not have the necessary permissions to use the API.
To resolve this issue, you may need to check the authentication method you are using to access the API. You may need to provide credentials or a token to authenticate your request.
Additionally, you may need to check if the API endpoint is correct and accessible from your Azure Data Factory environment. You can try testing the API endpoint using a tool like Postman or cURL to ensure that it is working correctly.
If you have already checked these things and are still receiving the error, you may need to contact the API provider to ensure that your account has the necessary permissions to access the API.
For more details, refer to Copy and transform data from and to a REST endpoint by using Azure Data Factory.
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