NOTE:
When customer tried combining their datasets using PersonId columns with the same name "PurchaserId", but different xdm paths to that name, they didn't get a good CJA UI experience, and they had to go back and add a column matching the same xdm path and name before they could query by a common user-id field.
Suggestion:
The documentation quote above is misleading, and the doc should be updated to strongly a preference for a common PersonId xdm path and name across combined-datasets.
Issue in ./help/connections/combined-dataset.md https://experienceleague.adobe.com/en/docs/analytics-platform/using/cja-connections/combined-dataset
NOTE: When customer tried combining their datasets using PersonId columns with the same name "PurchaserId", but different xdm paths to that name, they didn't get a good CJA UI experience, and they had to go back and add a column matching the same xdm path and name before they could query by a common user-id field.
Suggestion: The documentation quote above is misleading, and the doc should be updated to strongly a preference for a common PersonId xdm path and name across combined-datasets.