{
  "payload": {
    "export": "cart-validations-generate-run",
    "target": "cart.validations.generate.run",
    "input": {
      "cart": {
        "ddMethod": { "value": "PICKUP" },
        "ddDate": { "value": "2026-08-25" },
        "ddStartMin": null,
        "ddEndMin": null,
        "ddLocationId": { "value": "loc_123" }
      }
    },
    "output": {
      "operations": [
        {
          "validationAdd": {
            "errors": [
              {
                "message": "Your delivery date/time selection is incomplete — please choose it again.",
                "target": "$.cart"
              }
            ]
          }
        }
      ]
    }
  }
}