Does anybody can me help with project attributes? I am triyng to sync it throw the API, but I always get errors with it. It seems I do something wrong…

And on this screenshots my json and response with error from API, it is just one of examples, I tried use only one required attribute field, result is the same.

List of my attribute values:


There are Attributes in the API swagger definition for Project. I also tryed extend endpoint and populate attribute fields - but it seems this is another fields because according the screenshot above I can use only one item, not collection with it

What I missed in my json request to the server? Or it can’t work with API?