Enforce uniqueness for names
In a name generator, Names can be checked against existing columns in system Data models to ensure uniqueness.
For the relevant name generator, Edit a name generator.
Go to the Uniqueness tab.
Select a row in the Names pane.
In the Fields pane, select the checkbox for each column against which the selected name should be checked for uniqueness.
For example:
Click Save.
When the relevant Mappings are executed, any uniqueness collisions for these names are resolved by falling back to additional methods and/or iterations that you've configured in this name generator.