South Korea

type Invoice {
  // ...all generic invoice fields
  notes?: string;
  lines: [
    {
      // ...other line item fields
      customInfo?: {
        kor?: {
          purchaseDT?: string;
          spec?: string;
          note?: string;
        };
      };
    }
  ];
  recipient: {
    // ...other recipient fields
    customInfo?: {
      kor?: {
        type?: string;
        taxRegID?: string;
        representativeName?: string;
      };
    };
  };
  customInfo?: {
    kor?: {
      emailSubject?: string;
      taxType?: string;
      purposeType?: string;
      serialNum?: string;
    };
  };
}