{
  "$defs": {
    "RotationMode": {
      "description": "Creative rotation mode within an assignment.",
      "enum": [
        "even",
        "weighted"
      ],
      "title": "RotationMode",
      "type": "string"
    }
  },
  "description": "Binds a creative to a line with rotation rules.\n\nThe wire-level execution unit is the Line; the seller repo's\nplacement-level binding is a seller-internal mapping.\n\nID minting: ``assignment_id`` is seller-issued (created via the\nseller's API on buyer request).",
  "properties": {
    "assignment_id": {
      "description": "Seller-issued assignment identifier.",
      "title": "Assignment Id",
      "type": "string"
    },
    "creative_id": {
      "title": "Creative Id",
      "type": "string"
    },
    "effective_end_date": {
      "anyOf": [
        {
          "format": "date",
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Effective End Date"
    },
    "effective_start_date": {
      "anyOf": [
        {
          "format": "date",
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Effective Start Date"
    },
    "ext": {
      "anyOf": [
        {
          "additionalProperties": true,
          "type": "object"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Ext"
    },
    "line_id": {
      "description": "Seller-issued line the creative runs on.",
      "title": "Line Id",
      "type": "string"
    },
    "rotation_mode": {
      "$ref": "#/$defs/RotationMode",
      "default": "even"
    },
    "sov": {
      "anyOf": [
        {
          "maximum": 1,
          "minimum": 0,
          "type": "number"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Share of voice (0-1) for weighted rotation.",
      "title": "Sov"
    },
    "status": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Free-form assignment status; the typed vocabulary lands with the EP-1.4 state-machine bead.",
      "title": "Status"
    }
  },
  "required": [
    "assignment_id",
    "creative_id",
    "line_id"
  ],
  "title": "Assignment",
  "type": "object"
}