| Time | Status | User Agent |  |
| :-- | :-- | :-- | :-- |
| Make a request to see history. |

#### URL Expired

The URL for this request expired after 30 days.

### UpdateTaxWithholding Request

#### Parameters

- **issuerId**  
  - *string*  
  - Required: The identifier of the issuer that issued the option exercises to update tax withholding information for.

- **exerciseId**  
  - *string*  
  - Required: The identifier of the option exercise to update tax withholding information for.

- **taxWithholdings**  
  - *array of objects*  
  - The tax withholdings information to update.

#### Response

- **200**  
  - A successful response.
  - **issuerId**  
    - *string*  
    - Length between 1 and 50.

- **exerciseId**  
    - *string*  
    - Length between 1 and 50.

- **taxWithholdings**  
    - *array of objects*  
    - The updated tax withholdings.

- **taxWithholdings Object**  
  - Tax withholding information for an option exercise, calculated for a specific jurisdiction for a given stakeholder.

- **name**  
    - *string*  
    - Length ≤ 100.

- **rate**  
    - *object*  
    - The tax withholding percentage rate for the specified jurisdiction.

- **taxes**  
    - *object*  
    - The tax to withhold for the specified jurisdiction.

- **jurisdiction**  
    - *object*  
    - The jurisdiction for which the tax withholding is calculated.

#### Error Responses

- **400**  
  - Returned if required fields are omitted or if provided fields fail validation.

- **401**  
  - Returned if a valid `Authorization` header has not been included with the request.

- **403**  
  - Returned when the user does not have permission to access the resource.

- **500**  
  - Returned if an unexpected internal server error is encountered.

- **default**  
  - An unexpected error response.

### Example Request

```bash
curl --request POST \
     --url https://mock-api.carta.com/v1alpha1/issuers/issuerId/optionExercises/exerciseId:updateTaxWithholding \
     --header 'accept: application/json' \ 
     --header 'content-type: application/json'
```

### Example Request Body

```json
{
  "issuerId": "7",
  "exerciseId": "string",
  "taxWithholdings": [
    {
      "name": "string",
      "rate": {
        "value": "100.57"
      },
      "taxes": {
        "currencyCode": "USD",
        "amount": {
          "value": "1000.77"
        }
      },
      "jurisdiction": {
        "city": "San Francisco",
        "countrySubdivision": {
          "value": "US-CA"
        },
        "country": {
          "value": "USA"
        }
      }
    }
  ]
}
```