# I do not have registered gateway but it says gateway already exists **URL:** \ **Category:** Gateways\ **Created:** [February 22, 2021, 11:05pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674 "2021-02-22T23:05:51Z")\ **Posts on this page:** 20\ **Page:** 3
**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:** [June 24, 2021, 7:25am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/44 "2021-06-24T07:25:38Z")
Can you let the moderators know the results as well - we have mucho confusion over ID vs EUI so we are expecting other variations on this. ---
**Author:** ![xperiencelab](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/xperiencelab/32/35697_2.png) [@xperiencelab](https://www.thethingsnetwork.org/forum/u/xperiencelab)\ **Post date:** [June 24, 2021, 7:31am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/45 "2021-06-24T07:31:18Z")
The EUI is C0EE40FFFF2979BF ---
**Author:** ![htdvisser](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/htdvisser/32/45312_2.png) [@htdvisser](https://www.thethingsnetwork.org/forum/u/htdvisser)\ **Post date:** [June 24, 2021, 9:14am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/46 "2021-06-24T09:14:37Z")
> [@descartes](#): > > we have mucho confusion over ID vs EUI - Within a deployment, there can only be one gateway with the same EUI (across all tenants) - Within a tenant, there can only be one gateway with the same ID - When a gateway is deleted, the ID is retained and can not be re-used but the gateway EUI can be re-used (source: [https://www.thethingsindustries.com/docs/concepts/architecture/id-eui-constraints/](https://www.thethingsindustries.com/docs/reference/id-eui-constraints/)) > [@xperiencelab](#): > > The EUI is C0EE40FFFF2979BF A gateway with that EUI was registered a couple of weeks ago by @fivos-garpo, who apparently isn’t on this forum, but maybe that account is related to @fivos, who is on the forum. You can try reaching out to them. ---
**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:** [June 24, 2021, 9:22am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/47 "2021-06-24T09:22:22Z")
> [@htdvisser](#): > > > [@descartes](#): > > > > we have mucho confusion over ID vs EUI > > - Within a deployment, there can only be one gateway with the same EUI (across all tenants) > - Within a tenant, there can only be one gateway with the same ID > - When a gateway is deleted, the ID is retained and can not be re-used but the gateway EUI can be re-used > > (source: [ID and EUI Constraints | The Things Stack for LoRaWAN](https://www.thethingsindustries.com/docs/reference/id-eui-constraints/)) Yes, thanks, read the docs months back, answered in this vein multiple times, I’m talking about others but I’ve yet to figure out what to put in a GitHub issue. ---
**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:** [June 24, 2021, 9:23am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/48 "2021-06-24T09:23:10Z")
> [@htdvisser](#): > > > [@xperiencelab](#): > > > > The EUI is C0EE40FFFF2979BF > > A gateway with that EUI was registered a couple of weeks ago by @fivos-garpo, who apparently isn’t on this forum, but maybe that account is related to @fivos, who is on the forum. You can try reaching out to them. @xperiencelab, this begs the question, what did you put in the first time?? ---
**Author:** ![xperiencelab](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/xperiencelab/32/35697_2.png) [@xperiencelab](https://www.thethingsnetwork.org/forum/u/xperiencelab)\ **Post date:** [June 24, 2021, 9:33am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/49 "2021-06-24T09:33:32Z")
well i am pretty sure i put in the correct EUI. Only in the gateway device id was wrong, and that is why i deleted it afterwards. More precisely i created the gateway with the same gateway\_id it had in v2 version. And deleted it afterwards to add it with a different gateway\_id ---
**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:** [June 24, 2021, 9:37am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/50 "2021-06-24T09:37:50Z")
So either ‘fivos-garpo’ entered the wrong EUI which would mean they haven’t got a working gateway or alternatively you had some finger trouble. Regardless, perhaps revisit the EUI. The EUI implies it’s a Laird so not a randomly made up EUI - so hopefully fivos has a working gateway and it was just a mis-type for you. ---
**Author:** ![xperiencelab](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/xperiencelab/32/35697_2.png) [@xperiencelab](https://www.thethingsnetwork.org/forum/u/xperiencelab)\ **Post date:** [June 24, 2021, 9:53am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/51 "2021-06-24T09:53:16Z")
Then… i think i should go and see the EUI from the device. But the gateway was already registered in v2 and i just copy pasted the EUI. So it should be ok. If the gateway is registered (somehow) in another account is there a way to reclaim it ? Since i have the physical device? ---
**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:** [June 24, 2021, 9:58am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/52 "2021-06-24T09:58:24Z")
Copy n pasta isn’t a certainty either. There is still some uncertainty due to your ability to register the EUI whilst it was already registered. I’d check the device and go slow and we can pick up what happens if you can’t register it if that comes up. ---
**Author:** ![xperiencelab](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/xperiencelab/32/35697_2.png) [@xperiencelab](https://www.thethingsnetwork.org/forum/u/xperiencelab)\ **Post date:** [June 24, 2021, 10:01am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/53 "2021-06-24T10:01:30Z")
I guess that’s the plan for now I’ll let you know when i have any news on this Thanks again ---
**Author:** ![xperiencelab](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/xperiencelab/32/35697_2.png) [@xperiencelab](https://www.thethingsnetwork.org/forum/u/xperiencelab)\ **Post date:** [June 24, 2021, 2:29pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/54 "2021-06-24T14:29:21Z")
Hello again I just reached the gateway and i confirm that this is the correct EUI of the gateway, as it is written on the device. Still cant register the gateway ---
**Author:** ![Jeff-UK](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jeff-uk/32/35697_2.png) [@Jeff-UK](https://www.thethingsnetwork.org/forum/u/Jeff-UK)\ **Post date:** [June 24, 2021, 3:11pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/55 "2021-06-24T15:11:27Z")
> [@xperiencelab](#): > > But the gateway was already registered in v2 and i just copy pasted the EUI. and > [@xperiencelab](#): > > Only in the gateway device id was wrong, and that is why i deleted it afterwards. More precisely i created the gateway with the same gateway\_id it had in v2 version. And deleted it afterwards to add it with a different gateway\_id Just want to check - these deletions in V3 per > [@xperiencelab](#): > > I am trying to migrate a gateway from v2 to v3 > > 1. I created a gateway to the v3 console > 2. I deleted the gateway from the v3 console because of a typo in gateway ID or did you also delete in V2? ---
**Author:** ![xperiencelab](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/xperiencelab/32/35697_2.png) [@xperiencelab](https://www.thethingsnetwork.org/forum/u/xperiencelab)\ **Post date:** [June 24, 2021, 3:20pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/56 "2021-06-24T15:20:53Z")
After many failed tries to register in v3, i deleted it from v2 also but i still get the same error ---
**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:** [June 24, 2021, 3:25pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/57 "2021-06-24T15:25:52Z")
This is a red herring I’m afraid, being on v2 won’t affect v3. Does anyone know if the EUI can be changed on a Laird gateway? It would be useful if you could tell us what model you have so someone who knows the brand can comment. ---
**Author:** ![xperiencelab](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/xperiencelab/32/35697_2.png) [@xperiencelab](https://www.thethingsnetwork.org/forum/u/xperiencelab)\ **Post date:** [June 24, 2021, 3:27pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/58 "2021-06-24T15:27:28Z")
The model is Laird Sentrius RG186 ---
**Author:** ![Jeff-UK](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jeff-uk/32/35697_2.png) [@Jeff-UK](https://www.thethingsnetwork.org/forum/u/Jeff-UK)\ **Post date:** [June 24, 2021, 3:42pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/59 "2021-06-24T15:42:55Z")
> [@descartes](#): > > This is a red herring I’m afraid Yes and no - noodling around I saw this ![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/e/1/e18689e2f5b747e8895edc70b3f9665243e75b2b.png) which is indeed explained by > [@xperiencelab](#): > > i deleted it from v2 also but until that was confirmed there was the possibility of mistranscription or error with earlier reg, even if serendipitous and allowing operation in V2, as @xperiencelab had said the specific gw was previously registered under V2… and I just wanted to eliminate all early sources of error or problem…you never know. I havent come across stories or evidence of duplicate Laird EUI’s shipping ex-works so most likley if @xperiencelab has confirmed his/hers it looks like @fiveos-garrpo or @fivos ? is the one who has mis-typed… Even though not active on forum (?) TTI core will have registered account details from setting up TTN account and might (kindly, even if not part of their day job!) reach out by contact email to ask and enable transfer (but not deletion?!) of mis-configured registration…just thinking aloud… 😉 ---
**Author:** ![xperiencelab](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/xperiencelab/32/35697_2.png) [@xperiencelab](https://www.thethingsnetwork.org/forum/u/xperiencelab)\ **Post date:** [June 24, 2021, 3:56pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/60 "2021-06-24T15:56:22Z")
I’ll try to contact @fives-garpo, but what confuses me is how it was registered in the first place in v3 (with the wrong gateway id and the correct EUI), and after i deleted it to enter the correct device id it cannot register again ---
**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:** [June 24, 2021, 7:16pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/61 "2021-06-24T19:16:05Z")
4 posts were merged into an existing topic: [Connecting TTIG to TTN V3 - (NOT YET)](https://www.thethingsnetwork.org/t/connecting-ttig-to-ttn-v3-not-yet/43363/61) ---
**Author:** ![htdvisser](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/htdvisser/32/45312_2.png) [@htdvisser](https://www.thethingsnetwork.org/forum/u/htdvisser)\ **Post date:** [June 25, 2021, 12:55pm UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/62 "2021-06-25T12:55:14Z")
I’ve reached out to user `Fivos-Garpo` by email with a link to this forum thread. ---
**Author:** ![CloudnetSolutions](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/cloudnetsolutions/32/39090_2.png) [@CloudnetSolutions](https://www.thethingsnetwork.org/forum/u/CloudnetSolutions)\ **Post date:** [August 2, 2021, 2:10am UTC](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674/63 "2021-08-02T02:10:06Z")
Hola buenas noches, tengo el mismo problema elimine mi gateway y ahora cuando lo intento agregar nuevamente me dice ID Already taken. Me pueden ayudar? [Previous page](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674.md?page=2) [Next page](https://www.thethingsnetwork.org/forum/t/i-do-not-have-registered-gateway-but-it-says-gateway-already-exists/44674.md?page=4)