Each time I do it I get an operation outcome that says ‘Missing Authorization header’. Why do I need an authorization header if you are using api key authentication?
API Key authentication seems to work ok with the Organisation Data Terminology API
Unfortunately, the documentation was recently edited, adding this security pattern erroneously.
Due to the sensitive and personal nature of the data returned in this API, your app can only use the “signed JWT authentication” pattern in restricted access mode.
I have logged a ticket for the documentation to be corrected.