Errors

structural_reservation

409 – Already reserved in code.

Already reserved in code. Answered with 409.

What it means

The name is a structural reservation – a role address, an infrastructure name, an example Handle, or a name containing the brand. Those live in the validator, not in the third-party list.

What to do

Nothing to do: the validator already refuses it. A list entry would be a row that decides nothing.

The body

{
  "type": "https://tigby.eu/problems/structural_reservation",
  "title": "Already reserved in code",
  "status": 409,
  "detail": "…what was refused, naming this request's own values",
  "code": "structural_reservation",
  "doc_url": "https://docs.tigby.eu/errors/structural_reservation",
  "agent_hint": "…the next step, for software"
}

Branch on code. The detail names this request's own Handle, id or limit and is not part of the contract.