# Join not accepted: denied with Sodaq Explorer

**URL:** <https://www.thethingsnetwork.org/forum/t/join-not-accepted-denied-with-sodaq-explorer/21566>\
**Category:** TTN Network and Services\
**Created:** [January 17, 2019, 1:03pm UTC](https://www.thethingsnetwork.org/forum/t/join-not-accepted-denied-with-sodaq-explorer/21566 "2019-01-17T13:03:01Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![arjanvanb](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/arjanvanb/32/46626_2.png) [@arjanvanb](https://www.thethingsnetwork.org/forum/u/arjanvanb)\
**Post date:** [January 18, 2019, 4:30pm UTC](https://www.thethingsnetwork.org/forum/t/join-not-accepted-denied-with-sodaq-explorer/21566/7 "2019-01-18T16:30:20Z")

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> [@koennetwork](#):
>
> With the SendOTAA sketch join requests, the dev addr keeps changing.

Just to be sure: an OTAA device should not re-join for each uplink; see for example:

- [How often should a node do an OTAA Join, and is OTAA better than ABP?](https://www.thethingsnetwork.org/forum/t/how-often-should-a-node-do-an-otaa-join-and-is-otaa-better-than-abp/11192)
- [OTAA best practice: how to not join every time?](https://www.thethingsnetwork.org/forum/t/otaa-best-practice-how-to-not-join-every-time/14601)
- [OTAA then ABP](https://www.thethingsnetwork.org/forum/t/otaa-then-abp/12377)

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