1. Open the course record.
2. Select the Restrictions 2 tab to define scheduling restrictions.
3. Select a Length in Terms value that corresponds with the available terms in the session.  If a class should last 1 term in length, select 1, starting in any desired term.  If a class should last 2 terms in length, select a start term which has a term following it.

If the error occurs when copying course restrictions:
1. In Configuration, Academic Years, open the academic year you are copying to
2. Open the Session
3. On the Terms tab, verify the terms are correct and in the correct order