# Update Customer Update an existing customer's information. ## Request ### Path Parameters ### Headers ### Body Parameters ## Response ### Success (200 OK) ```json { "success": true, "data": { "customerId": "cust_a1b2c3d4e5f6g7h8", "email": "john.updated@example.com", "firstName": "John", "lastName": "Doe", "phone": "+1234567890", "country": "US", "status": "active", "riskLevel": "low", "createdAt": "2024-01-01T10:00:00.000Z", "updatedAt": "2024-01-15T10:35:00.000Z" }, "message": "Customer updated successfully", "error": null, "meta": { "request_id": "req_xxxxx", "timestamp": "2024-01-15T10:35:00.000Z", "processing_time_ms": 60, "api_version": "v1", "endpoint": "PUT /customers/:id", "user_type": "merchant" } } ``` ### Error Responses ## Examples ```bash curl -X PUT "https://api.zenpayz.com/merchant/api/v1/customers/cust_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" \ -d '{ "email": "john.updated@example.com", "phone": "+1987654321" }' ``` ```javascript const customer = await zenpays.customers.update('cust_a1b2c3d4e5f6g7h8', { email: 'john.updated@example.com', phone: '+1987654321', }); ```