# Updates a static unique custom group's name, description, or member resources

Updates a static unique custom group (groupCategory=5). Requires groupId and resourceIds. Only computer-type static unique groups exist (user-type static unique is not supported). Members must remain exclusive — resources already in another static unique group will be reported in invalidResourceIds.

**Important:** Do not include groupType or groupCategory in the request body — these are immutable after creation and will be rejected. The resourceIds field is required and is a complete replacement of the member list — pass the full desired member set on every update.

**Prerequisites:** Call [Get Available Resources](https://www.manageengine.com/products/desktop-central/custom-groups-get-available-resources.html) to discover valid resource IDs for the replacement member list.

## Endpoint

**POST** `/api/1.4/customgroup/updateCg`

## Request URL

```
https://{serverurl}/api/1.4/customgroup/updateCg
```

`{serverurl}`: See [OAuth Authentication - Endpoint Domain](https://www.manageengine.com/products/desktop-central/oauth-authentication-endpoint-domain.html)

## Scope

```
DesktopCentralCloud.Common.UPDATE
```

## Header

```
Authorization: Zoho-oauthtoken d92d4xxxxxxxxxxxxx15f52
```

## Request Parameters

### Request Headers

- **Content-Type** (string, Mandatory)  
  `application/json`  
  Must be application/json. Request body must be valid JSON.

- **Accept** (string, Mandatory)  
  `application/json`  
  Must be application/json. Only JSON responses are supported.

### Request Body

**Content-Type:** `application/json`  
**Type:** JSON object

#### Attributes

- **groupId** (long, Mandatory)  
  Resource ID of the static unique group to update. Fetch from [Retrieve All Custom Groups](https://www.manageengine.com/products/desktop-central/custom-groups-get-cglist.html).

- **groupName** (string, Optional)  
  Updated group name. Max 100 chars.

- **description** (string, Optional)  
  Updated description. Max 250 chars.

- **resourceIds** (array, Mandatory)  
  Complete replacement member list. Members must be exclusive to this group — each resource can belong to only ONE static unique group of the same type. Fetch IDs from [Get Available Resources](https://www.manageengine.com/products/desktop-central/custom-groups-get-available-resources.html).

## Sample Request

### Curl

```bash
curl --request POST \
  --url https://appdomain/api/1.4/customgroup/updateCg \
  --header 'Accept: application/json' \
  --header 'Authorization: Zoho-oauthtoken  d92d4xxxxxxxxxxxxx15f52' \
  --header 'Content-Type: application/json' \
  --data '{"groupId":310,"resourceIds":[101,102,103]}'
```

### Java

```java
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.io.IOException;
import java.net.http.HttpTimeoutException;

public class Main {
  public static void main(String[] args) {

    HttpRequest request = HttpRequest.newBuilder()
        .uri(URI.create("https://appdomain/api/1.4/customgroup/updateCg"))
        .header("Content-Type", "application/json")
        .header("Accept", "application/json")
        .header("Authorization", "Zoho-oauthtoken  d92d4xxxxxxxxxxxxx15f52")
        .method("POST", HttpRequest.BodyPublishers.ofString("{\"groupId\":310,\"resourceIds\":[101,102,103]}"))
        .build();
    HttpResponse<String> response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
    System.out.println(response.body());

  }
}
```

### Python

```python
import http.client

conn = http.client.HTTPSConnection("appdomain")

payload = "{\"groupId\":310,\"resourceIds\":[101,102,103]}"

headers = {
    'Content-Type': "application/json",
    'Accept': "application/json",
    'Authorization': "Zoho-oauthtoken  d92d4xxxxxxxxxxxxx15f52"
    }

conn.request("POST", "/api/1.4/customgroup/updateCg", payload, headers)

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))
```

### Deluge

```javascript
headersMap = Map();
headersMap.put("Content-Type", "application/json");
headersMap.put("Accept", "application/json");

data=Map();
data.put("groupId","1");
data_resourceIds=List();
data.put("resourceIds",data_resourceIds);

response = invokeUrl
[
    url: "https://appDomain/api/1.4/customgroup/updateCg"
    type: POST
    headers: headersMap
    body: data
    connection: connection_name
]

info response;
```

### PowerShell

```powershell
$headers=@{}
$headers.Add("Content-Type", "application/json")
$headers.Add("Accept", "application/json")
$headers.Add("Authorization", "Zoho-oauthtoken  d92d4xxxxxxxxxxxxx15f52")
$response = Invoke-WebRequest -Uri 'https://appdomain/api/1.4/customgroup/updateCg' -Method POST -Headers $headers -ContentType 'application/json' -Body '{"groupId":310,"resourceIds":[101,102,103]}'
```

## Sample Request Body

Update a static unique group's exclusive member list.

```json
{
  "groupName": "Privileged Servers",
  "groupId": 310,
  "description": "Updated - High-security servers with restricted technician access",
  "resourceIds": [
    101,
    102,
    103
  ]
}
```

## Response Parameters

### HTTP 200

**Response Body:** `application/json`  
**Type:** JSON object

#### Attributes

- **message_type** (string)  
  Always `'updateCg'` for this endpoint.

- **message_response** (JSON object)  
  Response payload container.

  - **updatecg** (JSON object)  
    Response payload.

    - **cgResourceId** (string)  
      Resource ID of the updated group (returned as string). Use as cgId in [Delete CG](https://www.manageengine.com/products/desktop-central/custom-groups-delete-cg.html), or as groupId in a subsequent [Update Static CG](https://www.manageengine.com/products/desktop-central/custom-groups-update-static-cg.html) / [Update Static Unique CG](https://www.manageengine.com/products/desktop-central/custom-groups-update-static-unique-cg.html) call.

    - **groupName** (string)  
      Current name after update.

    - **invalidResourceIds** (array)  
      Conditional. Array of resource IDs that were not found or not valid. Present only when some submitted resourceIds are invalid.

- **message_version** (string)  
  API version: `'1.4'`.

- **status** (string)  
  `'success'` when the request completed without errors.

### Sample Response: HTTP 200

Static unique group members and details updated.

```json
{
  "message_type": "updateCg",
  "message_response": {
    "updatecg": {
      "groupName": "Privileged Servers",
      "cgResourceId": "310"
    }
  },
  "message_version": "1.4",
  "status": "success"
}
```

Static unique group updated but some exclusive member resource IDs were not found.

```json
{
  "message_type": "updateCg",
  "message_response": {
    "updatecg": {
      "groupName": "Privileged Servers",
      "invalidResourceIds": [
        999,
        998
      ],
      "cgResourceId": "310"
    }
  },
  "message_version": "1.4",
  "status": "success"
}
```

### HTTP 404

**Response Body:** `application/json`

#### Attributes

- **message_type** (string)  
  Always `'updateCg'`.

- **message_version** (string)  
  API version: `'1.4'`.

- **status** (string)  
  Always `'error'`.

- **error_code** (string)  
  `'70506'` (CG_INVALID_DETAILS_TO_UPDATE).

- **error_description** (string)  
  `'No such Custom Group found.'` — group does not exist, user is out of scope, or group is invalid for current product edition.

### Sample Response: HTTP 404

Group ID does not exist or user lacks access.

```json
{
  "error_description": "No such Custom Group found.",
  "message_type": "updateCg",
  "error_code": "70506",
  "message_version": "1.4",
  "status": "error"
}
```

### HTTP 412

**Response Body:** `application/json`

#### Attributes

- **message_type** (string)  
  Always `'updateCg'`.

- **message_version** (string)  
  API version: `'1.4'`.

- **status** (string)  
  Always `'error'`.

- **error_code** (string)  
  `'70501'` (CG_CREATE_UPDATE_PARAMS_MISSING), `'70502'` (CG_DUPLICATE_NAME), `'70509'` (CG_DUMMY_CG_RENAME), `'70503'` (CG_NULL_CRITERIA_PATTERN), `'70517'` (CG_INVALID_CRITERIA_PATTERN), `'70508'` (CG_MORE_COMPUTERS_DUMMY_CG), `'70513'` (CG_INVALID_CREATION_MODE).

- **error_description** (string)  
  - `'Required parameters are missing to create/update Custom Group.'` (70501)  
  - `'Custom group name is already in use.'` (70502)  
  - `'All Features Group cannot be renamed.'` (70509)  
  - `'Criteria pattern is empty.'` (70503)  
  - `'Invalid criteria pattern.'` (70517)  
  - `'Computer limit exceeded for free edition.'` (70508)  
  - `'Only manually created Custom Group is allowed to be accessed using external apis.'` (70513)

### Sample Response: HTTP 412

Required field groupId is missing.

```json
{
  "error_description": "Required parameters are missing to create/update Custom Group.",
  "message_type": "updateCg",
  "error_code": "70501",
  "message_version": "1.4",
  "status": "error"
}
```

### HTTP 500

**Response Body:** `application/json`

#### Attributes

- **message_type** (string)  
  Always `'updateCg'`.

- **message_version** (string)  
  API version: `'1.4'`.

- **status** (string)  
  Always `'error'`.

- **error_code** (string)  
  Internal error code: `'1003'` (INTERNAL_ERROR).

- **error_description** (string)  
  Typically: `An internal error occurred while processing the request.`

### Sample Response: HTTP 500

Unexpected server-side failure during update.

```json
{
  "error_description": "An internal error occurred while processing the request.",
  "message_type": "updateCg",
  "error_code": "1003",
  "message_version": "1.4",
  "status": "error"
}
```

## Possible Response Codes

- **200** — Success  
- **404** — Not Found  
- **412** — Precondition Failed  
- **500** — Internal Server Error  

## Rate Limiting

**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.