Could you help us with AD Manager Plus issue?

We are using AD Manager for our CRUD process,the issue is when we are creating (Automatic) new user (Active Directory) getting information from a CSV file.

The CSV file content Employ Information:

Name, LastName, SndName, EmployID, EmployNumber

ADManager should read line to line this CSV file, check in Active Directory if this Employ not exist (filter EmployID OR EmployNumber), and create new user...

The issue is that ADManager does not check if the user exist and create anyway a new userID.

How can we id fix it?

thanks