In the courses screen in RenWeb there is a State ID field. This is where the NAD course ID is entered.
If the course title matches a title from the NAD’s list of standardized courses (for academies), you can leave this field blank and RenWeb will automatically export the corresponding (correct) NAD course ID.
If the school puts in their own ID, RenWeb will submit this field as-is. If an ID is entered in the State ID field that is not a valid NAD Course ID, it will result in an error. It is the responsibility of the school to correct those ID numbers.