India

type Invoice {
  // ...everything from invoice
  recipient: RecipientIND;
  lines: InvoiceLineIND[];
  discount?: {
    type: DiscountTypeIND;
    value: string;
  };

  restrictions?: InvoiceRestrictionsIND;
  purchaseOrder?: {
    number: string;
    issued: string;
    linesIncluded?: number;
    identityCode?: string;
  };

  customInfo: {
    ind: {
      supplyType: SupplyType;
      recipientRepresentativeGSTIN: string;
      recipientRepresentativeName: string;
      recipientStateCode: string;
      docNumber?: string;
    };
}

type RecipientIND {
  // ...everything from Recipient
  code?: string;
  identityNumber?: string;
  email?: string;
  mobile?: string;
  address: AddressIND;
  representative?: TaxRepresentativeIND;
}
  
type AddressIND {
  // ...everything from Address
  postalCode: string;
}

type TaxRepresentativeIND {
  taxId?: string;
  phone?: string;
  email?: string;
}

type InvoiceLineIND {
  // ...everting from InvoiceLine
  serialNumber?: string;
  service: string;
  hsnCode: string;
  unit: string;
}

type DiscountTypeIND = 
  // Standard Manufacturer
  'SM' | 
  // Manufacturer's Goods
  'MG';

type InvoiceRestrictionsIND {
  article73: boolean;
}

type SupplyType = 
  // Business to Business
  'B2B' | 
  // Business to Consumer
  'B2C' | 
  // Export with Payment of Tax
  'EXPWP' | 
  // Export without Payment of Tax
  'EXPWOP' | 
  // Supply to SEZ with Payment of Tax
  'SEZWP' | 
  // Supply to SEZ without Payment of Tax
  'SEZWOP' | 
  // Deemed Export
  'DEXP';