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> For other versions, use one of these documentation indexes:
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> - v5.0: https://docs.zip.tax/v-5-0/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.zip.tax/llms.txt.
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# Update Order

POST https://api.zip-tax.com/merchant/order/update
Content-Type: application/json

Available on Enterprise PlanForwards to TaxCloud PATCH /connections/\{connectionId}/orders/\{orderId}. orderId is a path identifier; the remaining body is the update payload relayed unchanged. Requires a TaxCloud-connected merchant with credentials on file: this operation returns 403 for a self-managed merchant, whose only available transaction endpoint is /merchant/cart/calculate.

Reference: https://docs.zip.tax/api-reference/merchant-transactions-tax-cloud/merchant-order-update

## Authentication

- `X-API-KEY` header (required) — API Key authentication via header

## Request

### Body (application/json)

This endpoint expects an object.

- `merchantId` (string, required) — UUID of the merchant. Must be owned by the calling account. Consumed by the Ziptax layer for routing and not forwarded to TaxCloud.
- `orderId` (string, required) — Your identifier for the order to update, as supplied when the order was created. Consumed for routing and not forwarded in the update payload.
- `completedDate` (datetime, optional) — RFC3339 datetime the order was shipped on, which creates the tax liability.

## Response

### 200

TaxCloud response relayed verbatim.

- `channel` (string, required) — The sales channel the order came from (e.g. amazon, ebay, walmart). Null when no channel was recorded.
- `connectionId` (string, required) — The TaxCloud connection the order was recorded under.
- `currency` (TaxCloudCurrency, required) — The currency the prices and tax amounts are denominated in.
- `customerId` (string, required) — Your identifier for the customer in your own system.
- `deliveredBySeller` (boolean, required) — Whether the seller delivered the order directly.
- `destination` (TaxCloudAddress, required) — The ship-to (destination) address of the order.
- `excludeFromFiling` (boolean, required) — Whether the order is excluded from tax filing.
- `exemption` (TaxCloudExemption, required) — The exemption information recorded on the order.
- `kind` (enum, required) — The kind of order: 'order' for a sale or 'credit' for a credit order.
  - Allowed values: `order`, `credit`
- `orderId` (string, required) — Your identifier for the order in your own system.
- `origin` (TaxCloudAddress, required) — The ship-from (origin) address of the order.
- `batchId` (string, optional) — Batch ID grouping this order with related orders, if one was supplied.
- `completedDate` (datetime, optional) — RFC3339 datetime the order was shipped/completed on, creating the tax liability. Absent for orders that are not yet completed.
- `lineItems` (list of TaxCloudCartItemWithTaxResponse, optional) — The order's line items, each with its tax rate and amount.
- `refunds` (list of TaxCloudRefundResponse, optional) — Refunds recorded against this order. Only included when the request set expand to 'refunds'.
- `transactionDate` (datetime, optional) — RFC3339 datetime the order was purchased on.

## Errors

### 400 Merchant Order Update Body Bad Request Error

Bad Request

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

### 401 Merchant Order Update Body Unauthorized Error

Unauthorized

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

### 403 Merchant Order Update Body Forbidden Error

Forbidden

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

### 404 Merchant Order Update Body Not Found Error

Not Found

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

### 413 Merchant Order Update Body Content Too Large Error

Request Entity Too Large

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

### 422 Merchant Order Update Body Unprocessable Entity Error

Unprocessable Entity

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

### 429 Merchant Order Update Body Too Many Requests Error

Too Many Requests

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

### 500 Merchant Order Update Body Internal Server Error

Internal Server Error

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

### 502 Merchant Order Update Body Bad Gateway Error

Bad Gateway

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

### 504 Merchant Order Update Body Gateway Timeout Error

Gateway Timeout

- `detail` (string, optional) — A human-readable explanation specific to this occurrence of the problem.
- `errors` (list of ErrorDetail, optional) — List of individual error details
- `instance` (string, optional) — A URI reference that identifies the specific occurrence of the problem.
- `status` (long, optional) — HTTP status code
- `title` (string, optional) — A short, human-readable summary of the problem type. This value should not change between occurrences of the error.
- `type` (string, optional, default: about:blank) — A URI reference to human-readable documentation for the error.

## Types

### TaxCloudCurrency

- `currencyCode` (enum, optional, default: USD) — ISO 4217 currency code the line-item prices are denominated in. USD or CAD. Defaults to USD when omitted.
  - Allowed values: `USD`, `CAD`

### TaxCloudAddress

- `city` (string, required) — City or post-town of the address.
- `line1` (string, required) — First line of the address: street number and name, PO Box, or building. Values longer than 50 characters are automatically truncated by TaxCloud.
- `state` (string, required) — State, province, or other large territorial division, as a two-letter abbreviation (e.g. MN, CA, ON).
- `zip` (string, required) — Postal or ZIP code. Five-digit (55401) and ZIP+4 (55401-2427) formats are accepted for US addresses.
- `countryCode` (enum, optional, default: US) — ISO 3166-1 alpha-2 country code of the address. US (United States) or CA (Canada). Defaults to US when omitted.
  - Allowed values: `US`, `CA`
- `line2` (string, optional) — Second line of the address, if any (e.g. apartment, suite, or unit number). Values longer than 50 characters are automatically truncated by TaxCloud.

### TaxCloudExemption

- `exemptionId` (string, optional) — Identifier of an exemption certificate previously created for the customer (see /merchant/cert/create). When provided, the customer is treated as exempt and the certificate is associated with the transaction.
- `isExempt` (boolean, optional) — Whether the customer is exempt from sales tax. Assumed true when exemptionId is provided.

### TaxCloudCartItemWithTaxResponse

- `index` (long, required) — Zero-based position of the item within the cart or order.
- `itemId` (string, required) — Your unique identifier for the line item, as submitted.
- `originalPrice` (double, required) — The original (pre-discount) unit price, as submitted.
- `price` (double, required) — The unit price tax was calculated on. When discounts were applied, this is the discounted unit price.
- `quantity` (double, required) — Quantity of the item.
- `tax` (TaxCloudTax, required) — The tax rate and amount calculated for this line item.
- `tic` (long, optional) — Taxability Information Code (TIC) the item was calculated under. Null when no TIC applies.

### TaxCloudRefundResponse

- `connectionId` (string, required) — The TaxCloud connection the refund was recorded under.
- `batchId` (string, optional) — Batch ID grouping this refund with related refunds, if one was supplied.
- `createdDate` (datetime, optional) — RFC3339 datetime the refund was created.
- `items` (list of TaxCloudRefundItemResponse, optional) — The refunded line items, each with the refunded price, quantity, and tax amount.
- `returnedDate` (datetime, optional) — RFC3339 datetime the refund took effect.

### ErrorDetail

- `location` (string, optional) — Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id'
- `message` (string, optional) — Error message text
- `value` (any, optional) — The value at the given location

### TaxCloudTax

- `amount` (double, required) — The calculated tax amount for the line item, in the transaction currency.
- `rate` (double, required) — The combined tax rate applied to the line item, as a decimal fraction (e.g. 0.08125 = 8.125%).

### TaxCloudRefundItemResponse

- `index` (long, required) — Zero-based position of the item within the refund.
- `itemId` (string, required) — The itemId of the refunded line item, matching the original order.
- `price` (double, required) — The unit price refunded, calculated automatically from the order. When the order had discounts, this reflects the discounted amount actually paid.
- `quantity` (double, required) — The quantity refunded.
- `tax` (TaxCloudRefundTax, optional) — The tax amount refunded for this line item.
- `tic` (long, optional) — Taxability Information Code (TIC) of the refunded item.

### TaxCloudRefundTax

- `amount` (double, required) — The tax amount refunded for the item, calculated proportionally from the order's tax. When the order had discounts, this reflects tax on the discounted price.

## Examples

**Request**

```json
{
  "merchantId": "6b3c1f5e-2a8d-4c9b-9f2e-1d7a4b6c8e10",
  "orderId": "order-2026-000123",
  "completedDate": "2026-07-13T14:00:00Z"
}
```

**Response**

```json
{
  "channel": null,
  "connectionId": "25eb9b97-5acb-492d-b720-c03e79cf715a",
  "currency": {
    "currencyCode": "USD"
  },
  "customerId": "customer-453",
  "deliveredBySeller": false,
  "destination": {
    "city": "Irvine",
    "line1": "200 Spectrum Center Dr",
    "state": "CA",
    "zip": "92618",
    "countryCode": "US"
  },
  "excludeFromFiling": false,
  "exemption": {
    "exemptionId": null,
    "isExempt": null
  },
  "kind": "order",
  "orderId": "order-2026-000123",
  "origin": {
    "city": "San Francisco",
    "line1": "1 Market St",
    "state": "CA",
    "zip": "94105",
    "countryCode": "US"
  },
  "completedDate": "2026-07-13T14:00:00Z",
  "lineItems": [
    {
      "index": 0,
      "itemId": "sku-1001",
      "originalPrice": 49.99,
      "price": 49.99,
      "quantity": 2,
      "tax": {
        "amount": 7.75,
        "rate": 0.0775
      },
      "tic": 0
    }
  ],
  "transactionDate": "2026-07-13T14:00:00Z"
}
```

**SDK Code**

```python
import requests

url = "https://api.zip-tax.com/merchant/order/update"

payload = {
    "merchantId": "6b3c1f5e-2a8d-4c9b-9f2e-1d7a4b6c8e10",
    "orderId": "order-2026-000123",
    "completedDate": "2026-07-13T14:00:00Z"
}
headers = {
    "X-API-KEY": "<apiKey>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.zip-tax.com/merchant/order/update';
const options = {
  method: 'POST',
  headers: {'X-API-KEY': '<apiKey>', 'Content-Type': 'application/json'},
  body: '{"merchantId":"6b3c1f5e-2a8d-4c9b-9f2e-1d7a4b6c8e10","orderId":"order-2026-000123","completedDate":"2026-07-13T14:00:00Z"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.zip-tax.com/merchant/order/update"

	payload := strings.NewReader("{\n  \"merchantId\": \"6b3c1f5e-2a8d-4c9b-9f2e-1d7a4b6c8e10\",\n  \"orderId\": \"order-2026-000123\",\n  \"completedDate\": \"2026-07-13T14:00:00Z\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("X-API-KEY", "<apiKey>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.zip-tax.com/merchant/order/update")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["X-API-KEY"] = '<apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"merchantId\": \"6b3c1f5e-2a8d-4c9b-9f2e-1d7a4b6c8e10\",\n  \"orderId\": \"order-2026-000123\",\n  \"completedDate\": \"2026-07-13T14:00:00Z\"\n}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.zip-tax.com/merchant/order/update")
  .header("X-API-KEY", "<apiKey>")
  .header("Content-Type", "application/json")
  .body("{\n  \"merchantId\": \"6b3c1f5e-2a8d-4c9b-9f2e-1d7a4b6c8e10\",\n  \"orderId\": \"order-2026-000123\",\n  \"completedDate\": \"2026-07-13T14:00:00Z\"\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.zip-tax.com/merchant/order/update', [
  'body' => '{
  "merchantId": "6b3c1f5e-2a8d-4c9b-9f2e-1d7a4b6c8e10",
  "orderId": "order-2026-000123",
  "completedDate": "2026-07-13T14:00:00Z"
}',
  'headers' => [
    'Content-Type' => 'application/json',
    'X-API-KEY' => '<apiKey>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.zip-tax.com/merchant/order/update");
var request = new RestRequest(Method.POST);
request.AddHeader("X-API-KEY", "<apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"merchantId\": \"6b3c1f5e-2a8d-4c9b-9f2e-1d7a4b6c8e10\",\n  \"orderId\": \"order-2026-000123\",\n  \"completedDate\": \"2026-07-13T14:00:00Z\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "X-API-KEY": "<apiKey>",
  "Content-Type": "application/json"
]
let parameters = [
  "merchantId": "6b3c1f5e-2a8d-4c9b-9f2e-1d7a4b6c8e10",
  "orderId": "order-2026-000123",
  "completedDate": "2026-07-13T14:00:00Z"
] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.zip-tax.com/merchant/order/update")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```