Thanks for reaching out to us!
As per the attached screenshot it looks like you are trying to access the invalid resource, hence you are getting the 401 Unauthorized error.
We request you to kindly download the latest postman collection via https://developers.refinitiv.com/en/api-catalog/customer-and-third-party-screening/world-check-one-api/downloads and then try initiating API calls.
Please feel free to reach out to us if you have any additional questions/concerns.
Vivek Kumar Singh