How to resolve Error: Request failed with status code 401?

error request failed with status code 401 (also known as 401 unauthorized) is an http status code that indicates a user (like a web browser or application) tried to access a resource but failed to provide valid authentication credentials in simpler terms, it means that the system requires you to log in or provide authorization, but either you are not logged in your login credentials (like a token or api key) are incorrect or expired your account doesn’t have the necessary permissions to access the resource to prevent these errors, ensure the following user permissions verify that users have the appropriate permissions as specified in the required permissions for deselect search in sfmc article marketing cloud subdomain check that the marketing cloud subdomain is correctly configured for guidance, click on need help? located under the marketing cloud subdomain input field related article what’s the suggested solution for the error i am receiving