All error codes

payload_too_large

HTTP 413 Request body is too large

What happened

The request body is larger than 256 KB. The size is checked before anything else in the body is looked at, so you get this instead of a per-field error even when the body is malformed as well.

What to do

Send only the fields this endpoint declares, with values inside their documented limits. A body this large means something unintended reached it - a file, a whole configuration, or a loop that kept appending - because no supported request needs this much.

Retrying

Fix the request and send it again.

How it arrives

{
    "type": "https://docs.fiberax.com/errors/payload_too_large",
    "title": "Request body is too large",
    "status": 413,
    "code": "payload_too_large",
    "request_id": "a277dcd1ca652c65"
}

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