# Get Invoice Retrieve a single invoice by its ID, including all line items and payment details. ## Request ### Headers ### Path Parameters ## Response ### Success (200 OK) ```json { "success": true, "data": { "invoiceId": "inv_a1b2c3d4e5f6g7h8", "invoiceNumber": "INV-2024-0001", "customerId": "cust_a1b2c3d4e5f6g7h8", "customerEmail": "john@example.com", "customerName": "John Doe", "currency": "USD", "status": "SENT", "issueDate": "2024-01-15T00:00:00.000Z", "dueDate": "2024-02-15T00:00:00.000Z", "subtotal": 250.00, "taxRate": 10, "taxAmount": 25.00, "discountAmount": 0, "totalAmount": 275.00, "amountPaid": 0, "amountDue": 275.00, "notes": "Thank you for your business", "terms": "Net 30", "lineItems": [ { "id": "li_001", "productId": "prod_a1b2c3d4e5f6g7h8", "description": "Pro Plan - Monthly", "quantity": 5, "unitPrice": 50.00, "taxRate": 0, "amount": 250.00, "sortOrder": 0 } ], "metadata": {}, "createdAt": "2024-01-15T10:30:00.000Z", "updatedAt": "2024-01-15T10:30:00.000Z" }, "message": "Invoice retrieved successfully", "error": null, "meta": { "request_id": "req_xxxxx", "timestamp": "2024-01-15T10:30:00.000Z", "processing_time_ms": 30, "api_version": "v1", "endpoint": "GET /invoices/:invoiceId", "user_type": "merchant" } } ``` ### Error Responses ## Examples ```bash curl -X GET https://api.zenpayz.com/merchant/api/v1/invoices/inv_a1b2c3d4e5f6g7h8 \ -H "Authorization: Bearer zp_test_xxxxx" \ -H "X-Timestamp: 2024-01-15T10:30:00.000Z" \ -H "X-Signature: a1b2c3d4e5f6..." \ -H "X-Secret-Salt: your_secret_salt" \ -H "Content-Type: application/json" ``` ```javascript const response = await fetch('https://api.zenpayz.com/merchant/api/v1/invoices/inv_a1b2c3d4e5f6g7h8', { method: 'GET', headers: { 'Authorization': `Bearer ${apiKey}`, 'X-Timestamp': timestamp, 'X-Signature': signature, 'X-Secret-Salt': secretSalt, 'Content-Type': 'application/json', }, }); const result = await response.json(); console.log(result.data.invoiceNumber); // "INV-2024-0001" console.log(result.data.totalAmount); // 275.00 ``` ```javascript const invoice = await zenpays.invoices.get('inv_a1b2c3d4e5f6g7h8'); console.log(invoice.invoiceNumber); // "INV-2024-0001" console.log(invoice.totalAmount); // 275.00 ``` ## Related Endpoints - [Create Invoice](/docs/rest-api/endpoints/billing/invoices/create-invoice) - [Update Invoice](/docs/rest-api/endpoints/billing/invoices/update-invoice) - [Send Invoice](/docs/rest-api/endpoints/billing/invoices/send-invoice) - [Cancel Invoice](/docs/rest-api/endpoints/billing/invoices/cancel-invoice)