when I want to import my users from my AD with "manage engine service desk plus" software, I can't and I can read this :

API Exception got : <?xml version="1.0" encoding="UTF-8"?><ZohoAPIError><error code="API100" message="Operation not allowed. Authorization failed"/></ZohoAPIError>

I provided my admin account to the login detail and domain admin for the LDAP, I can see my users but the import failed.

thanks.