Instances in Resolve are deduplicated globally within each Business Unit. This means if the same vulnerability is discovered twice, in separate projects, Resolve will highlight that they are duplicates and provide options for managing them.
The first published instance in a set of duplicates is nominated as the Global Instance, this is the instance that will be present in all main grids. All other duplicates underneath that Global Instance are marked as Duplicate Instances and can be viewed underneath the Duplicates tab on the Instance details screen.
When viewing the Project Details > Instances grid, duplicates will be shown since the Global Instance may have been discovered in another project. If you include the Global Instance ID column in the grid, any instances with a value in that column are duplicates.
Managing Global Instances and Duplicates
When modifying an instance that has duplicates Resolve will prompt you asking if you would like to update authorized duplicates. If this is a change that should be propagated to all duplicates select Yes, otherwise select No and the duplicates will be split off into another set and the instance you are editing will remain independent.
Example 1: The attack parameter for an instance has changed due to an update in the vulnerable application, this change should be propagated to all duplicates.
Example 2: A URL was incorrectly typed in when creating a manual instance, this change should not be propagated to all duplicates since it was improperly deduplicated with the incorrect URL.
Viewing Global Instances
When viewing a Global Instance you can view the Last Sighted Duplicate in the right-hand overview panel, as well as a full list of all duplicates underneath the Duplicates tab.
Viewing Duplicate Instances
When viewing a Duplicate Instance, a banner will be present at the top notifying you this is a duplicate with a link to the global instance. It is best to perform all management at the Global Instance level, all remediation states and other detail changes will be propagated to the related duplicates.