# Error creating Queue Transaction with Unique refernce **URL:** \ **Category:** Orchestrator\ **Tags:** question, orchestrator\ **Created:** [February 4, 2026, 7:43am UTC](https://forum.uipath.com/t/error-creating-queue-transaction-with-unique-refernce/5717167 "2026-02-04T07:43:54Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![swati.hiremath](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/swati.hiremath/32/515650_2.png) [@swati.hiremath](https://forum.uipath.com/u/swati.hiremath)\ **Post date:** [February 4, 2026, 7:43am UTC](https://forum.uipath.com/t/error-creating-queue-transaction-with-unique-refernce/5717167/1 "2026-02-04T07:43:54Z")
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 ---
**Author:** ![prashant1603765](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/prashant1603765/32/523412_2.png) [@prashant1603765](https://forum.uipath.com/u/prashant1603765)\ **Post date:** [February 4, 2026, 7:48am UTC](https://forum.uipath.com/t/error-creating-queue-transaction-with-unique-refernce/5717167/2 "2026-02-04T07:48:01Z")
Hi @swati.hiremath 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 ---
**Author:** ![MohammedShabbir](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/mohammedshabbir/32/558335_2.png) [@MohammedShabbir](https://forum.uipath.com/u/MohammedShabbir)\ **Post date:** [February 4, 2026, 7:55am UTC](https://forum.uipath.com/t/error-creating-queue-transaction-with-unique-refernce/5717167/3 "2026-02-04T07:55:59Z")
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. ---
**Author:** ![ashokkarale](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/ashokkarale/32/474400_2.png) [@ashokkarale](https://forum.uipath.com/u/ashokkarale)\ **Post date:** [February 4, 2026, 8:02am UTC](https://forum.uipath.com/t/error-creating-queue-transaction-with-unique-refernce/5717167/4 "2026-02-04T08:02:18Z")
@swati.hiremath The error clearly mentioning the reason that there is already a queue item with same reference. Make sure you have unique reference ---
**Author:** ![Monali\_Vekariya](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/monali_vekariya/32/264397_2.png) [@Monali\_Vekariya](https://forum.uipath.com/u/Monali_Vekariya)\ **Post date:** [February 4, 2026, 9:08am UTC](https://forum.uipath.com/t/error-creating-queue-transaction-with-unique-refernce/5717167/5 "2026-02-04T09:08:23Z")
Hi @swati.hiremath 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. ---
**Author:** ![system](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/system/32/182466_2.png) [@system](https://forum.uipath.com/u/system)\ **Post date:** [February 7, 2026, 9:08am UTC](https://forum.uipath.com/t/error-creating-queue-transaction-with-unique-refernce/5717167/6 "2026-02-07T09:08:54Z")
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