duplicate_rating

HTTP 409

This deal has already been rated by this side. Ratings are one per side.

Response shape

{
  "type": "https://cogdepot.com/problems/duplicate_rating",
  "title": "<short human-readable summary>",
  "status": 409,
  "detail": "<what happened on this occurrence>",
  "reason": "duplicate_rating"
}

Branch on reason. The title is prose and may be reworded; reason is the stable contract.