# Update Custom Field

Updates the properties of an existing field such as its name, description, data type, size, and default value.

## Endpoint

`PUT /dcapi/customColumn/modifyCustomColumn`

## Request URL

`https://`[{serverurl}](https://www.manageengine.com/products/desktop-central/help/api/cloud/oauth-authentication-endpoint-domain.html)`/dcapi/customColumn/modifyCustomColumn`

## Scope

`DesktopCentralCloud.CustomField.UPDATE`

## Header

`Authorization: Zoho-oauthtoken d92d4xxxxxxxxxxxxx15f52`

## Request Parameters

### Request Headers

- **Accept** `string` — **Mandatory**
  - `application/editCustomColumnStatus.v1+json`
- **Content-Type** `string` — **Mandatory**
  - `application/customColumnDetails.v1+json`

### Query Parameters

- **forceUpdate** `boolean` — Optional
  - Updates the custom field even if it is being used in other reports or dependent columns.

### Request Body

`application/json`

- `JSON Object`
  - **tableName** `string` — **Mandatory**
    - The table name can be any of the names provided in the list below:
      1. `ManagedComputerCustomFields` — if custom field created in computer view
      2. `InvSWCustomFields` — if custom field created in software view.
  - **columnName** `string` — **Mandatory**
    - Custom name for the field.
  - **dataType** `string` — **Mandatory**
    - The data type of a custom field can be one of the following:
      1. `CHAR`
      2. `INTEGER`
      3. `BOOLEAN`
      4. `FILE`
    - A custom data type can also be specified as the field's data type, which can be created using the API: [/dcapi/customColumn/customDataType](https://www.manageengine.com/products/desktop-central/help/api/cloud/custom-field-create-custom-data-type.html)
  - **size** `string` — **Mandatory**
    - Maximum character allowed for custom field value.
  - **defaultValue** `string` — Optional
    - Value to be used if none is provided.
  - **description** `string` — **Mandatory**
    - Metadata for the field.
  - **isPII** `boolean` — **Mandatory**
    - Indicates if the field holds sensitive data.
  - **actualColumnName** `string` — **Mandatory**
    - The actual name of the custom field column for which the User Data Type length is required. `actualColumnName` can be obtained from the `columName` key in the response of [/dcapi/customFields/computers/{ID}](https://www.manageengine.com/products/desktop-central/help/api/cloud/custom-field-get-computer-custom-fields.html).

## Sample Request

```curl
curl --request PUT \
  --url https://appdomains/dcapi/customColumn/modifyCustomColumn \
  --header 'Accept: application/editCustomColumnStatus.v1+json' \
  --header 'Authorization: Zoho-oauthtoken  d92d4xxxxxxxxxxxxx15f52' \
  --header 'Content-Type: application/customColumnDetails.v1+json' \
  --data '{"size":100,"actualColumnName":"COL3","dataType":"CHAR","description":"Custom Column to Store OS type","isPII":false,"tableName":"ManagedComputerCustomFields","columnName":"OS Type"}'
```

## Sample Request Body

```json
{
  "actualColumnName": "COL3",
  "size": 100,
  "defaultValue": 50,
  "dataType": "CHAR",
  "description": "Custom Column to Store OS type",
  "isPII": false,
  "columnName": "OS Type",
  "tableName": "ManagedComputerCustomFields"
}
```

## Response Parameters

### HTTP Code 200

Response Body: `application/json`

- `JSON Object`
  - **status** `string`
    - Indicates the result of the operation.
  - **message** `string`
    - Confirmation message of the operation performed.

## Possible Response Codes

- **200** — HTTP code

## Sample Response: HTTP 200

```json
{
  "message": "Field <b>OS Type</b> has been modified successfully",
  "status": "SUCCESS"
}
```

## API Rate Limits

**Duration:** 1 minute | **Threshold:** 30 | **Lock period:** 5 minutes

Duration — Time window for the threshold.  
Threshold — Number of API calls allowed within the specified duration.  
Lock Period — Wait time before consecutive API requests.