# Update Custom Field

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

## Endpoints

`PUT /dcapi/customColumn/modifyCustomColumn`

## Request URL

`https://{server-hostname}:8383/dcapi/customColumn/modifyCustomColumn`

## Scope

`CustomField.UPDATE`

## Header

`Authorization: d92d4xxxxxxxxxxxxx15f52`

## Request Parameters

### Request Headers

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

### Request Body

`application/json`

- `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/onpremise/custom-field-create-custom-data-type.html)
- `size` `string` — Mandatory
  - Maximum characters 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 from the response of [/dcapi/customFields/computers/{ID}](https://www.manageengine.com/products/desktop-central/help/api/onpremise/custom-field-get-computer-custom-fields.html)

## Sample Request

```curl
curl --request PUT \
  --url https://appdomain/dcapi/customColumn/modifyCustomColumn \
  --header 'Accept: application/editCustomColumnStatus.v1+json' \
  --header 'Authorization:  d92d4xxxxxxxxxxxxx15f52' \
  --header 'Content-Type: application/customColumnDetails.v1+json' \
  --data '{"actualColumnName":"COL3","size":100,"defaultValue":50,"dataType":"CHAR","description":"Custom Column to Store OS type","isPII":false,"columnName":"OS Type","tableName":"ManagedComputerCustomFields"}'
```

### 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`

- `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"
}
```

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**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.