curl --request DELETE \
  --url https://sandbox.tight.com/v6/invoicing/invoices/{id} \
  --header 'Authorization: Bearer <token>'

{
  "result": "SUCCESS",
  "data": {
    "id": "inv_158998869",
    "name": "June Consulting Invoice",
    "invoiceNo": 1001,
    "status": "ACTIVE",
    "invoiceStatus": "OPEN",
    "date": "2025-06-26",
    "totals": {
      "subtotal": 10000,
      "discountedTotal": 9500,
      "salesTax": 843,
      "total": 10343,
      "paidAmount": 5000,
      "balance": 5343
    },
    "pdfUrl": "https://cdn.sandbox.tight.com/invoices/inv_158998869.pdf",
    "customerInvoiceKey": "abc123xyz",
    "notes": "Thank you for your business!",
    "customer": {
      "id": "cus_4852707",
      "name": "Abigail Adams",
      "email": "abigail@tight.com"
    },
    "apiName": "QBO",
    "apiSourceId": "ext_123",
    "recurrence": {
      "frequency": "MONTHLY",
      "interval": 1,
      "endDate": "2025-12-31"
    },
    "discount": {
      "value": "5.0",
      "type": "PERCENT",
      "calculateBeforeSalesTax": true
    },
    "salesTax": {
      "value": "8.875",
      "type": "PERCENT"
    },
    "collectionInfo": {
      "paymentUrl": "https://pay.tight.com/inv_158998869",
      "term": {
        "type": "NET_30",
        "dueDate": "2025-07-26"
      },
      "sendEmail": true,
      "lastViewedDatetime": "2023-11-07T05:31:56Z",
      "reminderRecurrence": {
        "frequency": "WEEKLY",
        "interval": 1
      },
      "emailSentDatetime": "2023-11-07T05:31:56Z",
      "emailStatus": "SENT",
      "emailErrors": {
        "internal_key": "some_internal_key",
        "some_other_field": 23434
      },
      "paymentMethods": [
        "CREDIT_CARD"
      ]
    },
    "lineItems": [
      {
        "id": "ili_28868401",
        "description": "Consulting services",
        "amount": 10000,
        "quantity": "2.0",
        "price": "5000.0",
        "salesTax": {
          "value": "8.875",
          "type": "PERCENT"
        },
        "apiItemId": "ext_item_123",
        "glAccount": {
          "id": "gla_38560327",
          "name": "Officer(s) Salaries and Wages",
          "accountNo": "60210",
          "type": "EXPENSE",
          "iconUrl": "https://cdn.sandbox.tight.com/icons/glAccountTypes/expense.png"
        }
      }
    ],
    "installments": [
      {
        "id": "istl_123",
        "name": "First installment",
        "dueDate": "2025-07-15",
        "balance": 10000,
        "amountDue": {
          "value": "50.0",
          "type": "AMOUNT"
        }
      }
    ],
    "customData": {
      "internal_key": "some_internal_key",
      "some_other_field": 23434
    }
  }
}