Openapi V2 Create Single Message Response Structure

{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/ahasend/refs/heads/main/json-structure/openapi-v2-create-single-message-response-structure.json",
  "name": "CreateSingleMessageResponse",
  "description": "CreateSingleMessageResponse schema from AhaSend API",
  "type": "object",
  "properties": {
    "object": {
      "type": "string",
      "enum": [
        "message"
      ],
      "description": "Object type identifier",
      "example": "message"
    },
    "id": {
      "type": "string",
      "nullable": true,
      "description": "Message ID (null if the message was not sent)",
      "example": "<uuid@example.com>"
    },
    "recipient": {
      "$ref": "#/components/schemas/Recipient"
    },
    "status": {
      "type": "string",
      "enum": [
        "queued",
        "scheduled",
        "error"
      ],
      "description": "Status of the message",
      "example": "queued"
    },
    "error": {
      "type": "string",
      "nullable": true,
      "description": "Error message if the message was not sent",
      "example": "example_value"
    },
    "schedule": {
      "$ref": "#/components/schemas/MessageSchedule",
      "description": "Provided if the request contained a schedule"
    }
  },
  "required": [
    "object",
    "recipient",
    "status"
  ]
}