When browsing the accredit.ly endpoint documentation, you may see that some of them have “AUTH REQUIRED” in their details. This means that for the request to succeed you will need to include a valid authentication token, which can be generated by the /account/authentication endpoint.
When requesting some accreditations or analysis results, it may be required that the authenticated requester is the owner or the issuer of the accreditation. For security reasons only accreditation owners are permitted to perform some actions. These are detailed in the specific endpoints.