Hi ​@devin.tiemens,

Just to check: are you trying to import the API’s Open API documentation in its original 3.1.0 spec? It seems that way from your screenshot.

This tutorial was based on a case we worked on with this API, where we ran into the issue that the Import Swagger feature is only compatible with Open API spec until 3.0.0. The error message we encountered was slightly different though, if I remember correctly. 
 

Apparently, they converted the Open API documentation from the original 3.1.0 to the 3.0.0 spec beforehand, for editing purposes. Might be worth trying out. 
 

It’s a really brilliant feature when everything works as expected, but not every API offers the documentation in this way unfortunately. 

Hi ​@devin.tiemens 

I heard from the person doing the video that what ​@Stijn Verhoeff explains is what was done to make it work.

Thanks for your reply. Is it possible to get the 3.0.0 documentation to try it?

Hi ​@devin.tiemens 

You change the code in it to be 3.0.0 instead of 3.1.0. I do have the code from the last time. You can’t attach JSON files to this, so I changed it to txt. You need to change it back to a JSON file to properly use it.

Thanks Thomas, this works!