All error codes

vpn_device_not_editable

HTTP 409 This device was not created through the platform and cannot be renamed

What happened

The peer was added inside the router by hand, not through the platform, so there is no device record to rename.

What to do

Rename the peer inside the router, or delete it and create a device through the API.

Retrying

Fix the request and send it again.

How it arrives

{
    "type": "https://docs.fiberax.com/errors/vpn_device_not_editable",
    "title": "This device was not created through the platform and cannot be renamed",
    "status": 409,
    "code": "vpn_device_not_editable",
    "request_id": "a277dcd1ca652c65"
}

Branch your code on code, never on the wording of title.