We registered our organization on Company House, and we got API key, upon testing we are facing UNAUTHORIZATION ERROR.
Unable to proceed further, this is using REST API.
How to authorize in REST API?
Welcome - this forum is a good place to look for solutions.
To do so try using the “magnifying glass” icon to search - that should be at the upper right (on web view, not sure in mobile?)
I would try searching for the name of the tool / language / system you’re using, and the exact error message / code you receive. Ideally the http response code and any body text you get back.
Perhaps add the URI you’re trying to access also e.g. /company/ or maybe /search/companies etc.
Something like maybe 401 unauthorised javascript.
Good luck