Dublicate Device EUI

I am trying to ad a device, but get the following error: duplicate key value violates unique constraint “device_pkey”.
It is possibly because I tried to ad the same device earlier.
I use a Raspberry Pi with a RAK2247 board and the full Chirpstack setup.
Are there any way I can delete the earlier attempt?

By right, you can just delete the old device and add new device on Web GUI.

The device is no longer shown on the GUI. But must be storer somewhere in the system.

Maybe it’s in another application? Remember the device must be only exists in one application on the system

Or it exists in another account im ChirpStack.

I solved the problem by flashing a new SD card.

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