# Modify APP EUI in end device

**URL:** <https://www.thethingsnetwork.org/forum/t/modify-app-eui-in-end-device/61564>\
**Category:** Dragino\
**Created:** [February 21, 2023, 11:26am UTC](https://www.thethingsnetwork.org/forum/t/modify-app-eui-in-end-device/61564 "2023-02-21T11:26:17Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![jaumet](https://www.thethingsnetwork.org/forum/letter_avatar_proxy/v4/letter/j/a9a28c/32.png) [@jaumet](https://www.thethingsnetwork.org/forum/u/jaumet)\
**Post date:** [February 21, 2023, 11:26am UTC](https://www.thethingsnetwork.org/forum/t/modify-app-eui-in-end-device/61564/1 "2023-02-21T11:26:18Z")

</div>

Hello everyone, I need to modify the APP EUI, I mistakenly entered the same value as the DEV EUI, since they coincided with the same header. I have tried to create the final device again, but TTN tells me that it already exists. It is a DRAGINO LTC2-HT Temperature Sensor.  
how could i solve it? (I don’t have the possibility to do it with CLI, it gives me problems; it would have to be through the console or the TTN managers).  
thank you

---

<div class="post-metadata">

**Author:** ![Johan\_Scheepers](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/johan_scheepers/32/46550_2.png) [@Johan\_Scheepers](https://www.thethingsnetwork.org/forum/u/Johan_Scheepers)\
**Post date:** [February 21, 2023, 11:52am UTC](https://www.thethingsnetwork.org/forum/t/modify-app-eui-in-end-device/61564/2 "2023-02-21T11:52:14Z")

</div>

So you cant delete the one created in error from the console?

---

<div class="post-metadata">

**Author:** ![KrishnaIyerEaswaran2](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/krishnaiyereaswaran2/32/44663_2.png) [@KrishnaIyerEaswaran2](https://www.thethingsnetwork.org/forum/u/KrishnaIyerEaswaran2)\
**Post date:** [February 21, 2023, 1:33pm UTC](https://www.thethingsnetwork.org/forum/t/modify-app-eui-in-end-device/61564/3 "2023-02-21T13:33:42Z")

</div>

There’s no option to update the primary identifiers (Application EUI, Device EUI, Device ID, Application ID) of a device.  
These fields are handled in a special way in the database and we can’t just update them.  
The only option is to delete the device and recreate it.

---

<div class="post-metadata">

**Author:** ![descartes](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/descartes/32/47220_2.png) [@descartes](https://www.thethingsnetwork.org/forum/u/descartes)\
**Post date:** [February 21, 2023, 1:34pm UTC](https://www.thethingsnetwork.org/forum/t/modify-app-eui-in-end-device/61564/4 "2023-02-21T13:34:28Z")

</div>

Please do NOT double post - it’s a waste of volunteer time and splits answers.

---

<div class="post-metadata">

**Author:** ![descartes](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/descartes/32/47220_2.png) [@descartes](https://www.thethingsnetwork.org/forum/u/descartes)\
**Post date:** [February 21, 2023, 1:34pm UTC](https://www.thethingsnetwork.org/forum/t/modify-app-eui-in-end-device/61564/5 "2023-02-21T13:34:46Z")

</div>