Hello,
Getting the error while adding queue item with Unique reference set but unable to find that reference item in Queue when manually checked. Can anyone help on this.
Error message: Status code: 409 (Conflict). Orchestrator response:
Error creating Transaction. Duplicate Reference. Error code: 1016
Queue retention policy: 30 days
Regards,
Swati
Welcome to UiPath
The “Duplicate Reference (409)” happens because the same Reference already exists in the queue, even if you can’t see it.
Most common reason: the item is in Deleted/In‑Progress/another folder and still counted during the 30‑day retention.
Fix: enable “Show Deleted” in the queue, check all folders, or change the reference value.
If helpful, mark as solution. Happy automation with UiPath
You are getting this because same reference queue item already exists.
As a best practice, check existing items using Get Queue Items activity and then decide the flow.
Else Use a truly unique reference like append date/time to it.
The error clearly mentioning the reason that there is already a queue item with same reference. Make sure you have unique reference
Error 1016 means the reference already exists in the queue within the retention period, even if it’s not visible.
Check all statuses and folders, or use a truly unique reference (for example append a timestamp/ID) to avoid the conflict.
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