In order to resolve this issue, reduce your rule set slightly and examine for duplicates. An easy way to examine the duplicates is to choose Configuration > Policies. Scroll down to your policy and click the policy. On the next screen, scroll past the modules and onto the section called Combined Policy Rules. In this section, you see headers such as ID, Type, Status, Action, Log, and so forth. Click directly on the Type heading. This sorts the rules by type.