# Fetch maximum character allowed for a specific custom column

This API can be used to fetch maximum character allowed for user data type of a specific custom field.

## Endpoint

`GET /dcapi/customColumn/udtLength`

## Request

### Request URL

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

### Scope

`DesktopCentralCloud.CustomField.READ`

### Header

`Authorization: Zoho-oauthtoken d92d4xxxxxxxxxxxxx15f52`

### Request Parameters

#### Request Headers

- **Accept** `string` — Mandatory
  - `application/udtLengthDetails.v1+json`

#### Query Parameters

- **tableName** `string` — Mandatory

  The table name can be any of the names provided in the list below:
  1. `ManagedComputerCustomFields` — if customfield created in computer view
  2. `InvSWCustomFields` — if customfield created in software view.

- **actualColumnName** `string` — Mandatory

  The actual name of the custom field column for which the User Data Type length is required. `actualColumnName` can be get from the `columName` key from 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 GET \
  --url 'https://appdomains/dcapi/customColumn/udtLength?tableName=SOME_STRING_VALUE&actualColumnName=SOME_STRING_VALUE' \
  --header 'Accept: application/udtLengthDetails.v1+json' \
  --header 'Authorization: Zoho-oauthtoken  d92d4xxxxxxxxxxxxx15f52'
```

## Response Parameters

### HTTP Code 200

#### Response Body — `application/json`

- `JSON Object`
  - **lengthOfUDT** `string`
    - Returns maximum length of the user data type for given custom field

## Sample Response: HTTP 200

```json
{
  "lengthOfUDT": "20"
}
```

![](https://www.zohowebstatic.com/sites/zweb/images/people/ico-help.png)

**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.