I am starting with the Ads API but I get the “UNAUTHORIZED_ACCESS” error when trying to create sand box account. I read in some posts here that I should sing-up to have ads access.
Below is the output response
[errors] => Array
 => Array
[code] => UNAUTHORIZED_ACCESS
[message] => This request is not properly authenticated
) [request] => Array ( [params] => Array ( ) )
APP ID: 15977265. Please help.
Thanks in advance.