Failed in checking the access token board id not generated shows status failure

  1. Describe the issue briefly
    401 error in postman in verify the access token
  2. How much time have you spent debugging this issue?
    (Please spend at least 15 minutes to resolve the issue on your own before posting a new topic here)
    1 hrs.
  3. What is your hypothesis?
    not known

You might be passing the parameters in the wrong format.
Check these URLs.
https://developers.pinterest.com/tools/api-explorer/?
https://developers.pinterest.com/docs/api/overview/?