All error codes

too_many_interfaces

HTTP 422 Too many network interfaces

What happened

The server being created would end up with more than ten network interfaces once the public address and every requested private network are counted.

What to do

Ask for fewer networks in the create request - the body accepts at most eight in any case - and attach the remaining networks to the server afterwards, one operation at a time.

Retrying

Fix the request and send it again.

How it arrives

{
    "type": "https://docs.fiberax.com/errors/too_many_interfaces",
    "title": "Too many network interfaces",
    "status": 422,
    "code": "too_many_interfaces",
    "request_id": "a277dcd1ca652c65"
}

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