{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "MessageRequestBlock",
  "type": "object",
  "properties": {
    "initiatingPartyId": {
      "type": "string",
      "description": "Unique identifier of the message sender."
    },
    "messageId": {
      "type": "string",
      "description": "A point-to-point unique identifier is assigned to every message by the message initiator."
    },
    "creationDateTime": {
      "type": "string",
      "description": "ISO 8601 format date and time in Coordinated Universal Time (UTC) when this message was created."
    },
    "businessType": {
      "type": "number",
      "description": "Unique identifier assigned by Mastercard to define the commercial product construct. * Refer to Codes and Formats section for more details."
    }
  }
}