Interface SendInvoiceInput

interface SendInvoiceInput {
    accountReference: string;
    amount: string | number;
    appKey?: string;
    billedFullName: string;
    billedPeriod: string;
    billedPhoneNumber: string;
    dueDate: string;
    externalReference: string;
    invoiceItems?: { amount: string | number; itemName: string }[];
    invoiceName: string;
}