CreateInvoicePayload

{
    "clientId": "string",
    "date": "string",
    "dueDate": "string",
    "currency": "USD",
    "prefix": "string",
    "lineItems": [
        {
            "id": "123e4567-e89b-12d3-a456-426614174000",
            "type": "GOODS",
            "description": "Premium Widget",
            "price": 100,
            "quantity": 2,
            "unit": "pieces",
            "sortOrder": 1,
            "taxId": "string"
        }
    ],
    "status": "string",
    "discountType": "percentage",
    "discountValue": 0,
    "deliveryOptions": {
        "email": {
            "send": true,
            "subject": "string",
            "recipients": [
                "string"
            ],
            "body": "string"
        }
    }
}