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On private network provided by on TTI with the SaaS offer using the data integration can be confusing to use since their is no way to access a swagger ui as for the public documentation. It is impossible to use the URL bar of your browser, you will end up with either on a "404 - Not found" or on a "non authorized" message.
Solution
Makes sure the data integration is enabled for your application.
Don't try to go on "http://data.<domain_id>.thethings.industries"; It simply doesn't exist.
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