All error codes

vpn_device_limit_reached

HTTP 409 The tunnel has reached its device limit

What happened

The tunnel already has the maximum number of devices (ten).

What to do

Delete a device you no longer need, then repeat with the same idempotency key.

Retrying

Change the state this refers to, then repeat the same request with the same idempotency key.

How it arrives

{
    "type": "https://docs.fiberax.com/errors/vpn_device_limit_reached",
    "title": "The tunnel has reached its device limit",
    "status": 409,
    "code": "vpn_device_limit_reached",
    "request_id": "a277dcd1ca652c65"
}

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