Duplicate Feature Validation Rule
This object validation rule ensures that duplicate features are not created when you commission design feature classes in Designer Express. You would use this rule when running QA/QC after you commission design feature classes. For example, a support structure and a transformer that have the same geometry would be validated, however two support structures that have the same geometry would not be validated. In the example, each support structure would generate a QA/QC error. This rule works only on features, not tables.