Because the error states this limit is for "users without credentials" I tried doing the same request but with an appropriate token. I tried this both through getting a token for the application (scope /read-public) and for an individual authentication with their orcid login (scope /authenticate). In both cases this returned exactly the same error.
This applies to the /search /expanded-search and /csv-search API endpoints (except in the latter case there is just a 500 response, and no error message recieved).
I wonder if anyone could clarify:
* Is this a universal limit on the search, or is it possible to avoid with the right kind of credentials?
* If it is possible to avoid it, what credentials are required and how would I go about getting these credentials?