So the openapi specification that is found in the documentation of the ODC Rest APIs has the openapi version set to 3.0.4.
However, if you feed it as input to consume in ODC Studio, only versions up to 3.0.3 are supported. Anything higher is (currently) just refused. it returns the very meaningful message that the format is not recognized. (for which i'll make another idea)
So why not keep these 2 in line, and only put versions in the documentation when they are also supported in ODC Studio?