All error codes

vpn_conflict

HTTP 409 The port or subnet recorded for this tunnel is taken by another interface

What happened

The port or the subnet recorded for this tunnel is now used by another interface on the router, so the tunnel cannot be brought back as recorded.

What to do

Free the port or the subnet inside the router, or contact support with the request id, 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_conflict",
    "title": "The port or subnet recorded for this tunnel is taken by another interface",
    "status": 409,
    "code": "vpn_conflict",
    "request_id": "a277dcd1ca652c65"
}

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