# End device seems to be already registered but I haven't **URL:** \ **Category:** End Devices (Nodes)\ **Created:** [August 10, 2023, 3:13pm UTC](https://www.thethingsnetwork.org/forum/t/end-device-seems-to-be-already-registered-but-i-havent/64293 "2023-08-10T15:13:55Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![iot-engineer-ubidots](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/iot-engineer-ubidots/32/35697_2.png) [@iot-engineer-ubidots](https://www.thethingsnetwork.org/forum/u/iot-engineer-ubidots)\ **Post date:** [August 10, 2023, 3:13pm UTC](https://www.thethingsnetwork.org/forum/t/end-device-seems-to-be-already-registered-but-i-havent/64293/1 "2023-08-10T15:13:55Z")
Greetings everyone, Currently I find myself registering a LoRaWAN tracker on this LNS, however I’m stuck in an awful situation: It seems like someone else registered a device with the same DevEui and AppEUI as my device. ![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/0/f/0f407c45dbcb4f5c56ee7a5baf2ab0a62844be39.png) It seems odd to me, since, it is to my knowledge, that a device’s DevEUI and AppEUI are unique identifiers. is it worth mentioning that `test-app7` is not an application within my account. Is there something I can do from my end to fix this? Thanks in advance ---
**Author:** ![kersing](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/kersing/32/44777_2.png) [@kersing](https://www.thethingsnetwork.org/forum/u/kersing)\ **Post date:** [August 10, 2023, 4:40pm UTC](https://www.thethingsnetwork.org/forum/t/end-device-seems-to-be-already-registered-but-i-havent/64293/2 "2023-08-10T16:40:34Z")
1. Complain to your vendor, DevEUI is supposed to globally unique. 2. If possible modify the DevEUI on the device to a value generated by TTN. (As you don’t mention the brand and model I can’t check if it allows you to change the EUI)