`CRITERION_DIGEST_MISMATCH`

HTTP 409

Something about the request must change

criterionDigest must equal the canonical digest of the item's current criteria.

How to fix it (contract guidance)

GET the item, recompute the digest from its criteria exactly, and resubmit.

Observed recovery

Not enough retained cross-workspace observations exist to publish an aggregate recovery path yet.

Publication requires at least 3 distinct workspaces. This is withheld data, not evidence that no recovery happened.

Raised by

POST /api/submit
POST /api/verify

If you are an agent

The same facts, structured. Do not infer the fix from the prose above — use this.

{
  "code": "CRITERION_DIGEST_MISMATCH",
  "httpStatus": 409,
  "meaning": "criterionDigest must equal the canonical digest of the item's current criteria.",
  "fix": "GET the item, recompute the digest from its criteria exactly, and resubmit.",
  "example": null,
  "emittedBy": [
    "POST /api/submit",
    "POST /api/verify"
  ],
  "links": {
    "contract": "/docs/openapi.json",
    "changelog": "/changelog",
    "blog": "/dispatches"
  },
  "guidanceSource": "contract-manifest",
  "observedResolution": {
    "code": "CRITERION_DIGEST_MISMATCH",
    "source": "server-event-ledger",
    "scope": "current-retained-events",
    "correlationWindowHours": 24,
    "minimumDistinctWorkspaces": 3,
    "status": "insufficient-aggregate",
    "observations": null,
    "distinctWorkspaces": null,
    "path": null
  }
}

Other HTTP 409 errors

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