In the past when the API was given a non-existent ORCID the API would returns an HTTP 404 status or the error messages contained "Invalid orcid". (The ORCID is syntactically valid.) A call to the notification API
has recently, that is, the last few months, started returning
<response-code>400</response-code>
<developer-message>The client application sent a bad request to ORCID.</developer-message>
<user-message>The client application sent a bad request to ORCID.</user-message>
<error-code>9006</error-code>
</error>
A more meaningful error message would be much appreciated. Or perhaps there is an API call I should be making first to verify the existence of the ORCID. Please advise.
-- Andrew