# Update computer or user targets by resource IDs

Updates the targets of an existing collection, configuration using numeric resource IDs.

**Modes:** Pass `appendTargets=true` to add to existing targets (APPEND). Omit this parameter to replace all targets (REPLACE). Note: REPLACE is not supported for user targets - use APPEND instead.

**Scope validation:** Each resource ID (Computer or User) must be within the technician's assigned scope. To look up resource IDs for collection, use [ComputerDetails](https://www.manageengine.com/products/desktop-central/help/api/cloud/computers-getcomputers.html) to get all computers. To use this endpoint, set `useResourceIdFormat=true` in the request body.

## Endpoint

`PUT /dcapi/target/{collectionId}/modifyTargets`

## Request URL

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

## Scope

`DesktopCentralCloud.Configurations.UPDATE`, `DesktopCentralCloud.SWDeployment.UPDATE`, `DesktopCentralCloud.PatchMgmt.UPDATE`, `DesktopCentralCloud.VulnerabilityMgmt.UPDATE`

## Header

`Authorization: Zoho-oauthtoken d92d4xxxxxxxxxxxxx15f52`

## Request Parameters

### Request Headers

- **Content-Type** `string` **Mandatory**: `application/modifyTargets.v1+json`
- **Accept** `string` **Mandatory**: `application/modifyTargets.v1+json`

### Path Parameters

- **collectionId** `string` **Mandatory**

  The unique numeric identifier of the collection whose targets are to be updated. Fetch from [Get Configurations View](https://www.manageengine.com/products/desktop-central/help/api/cloud/deployment-fw-get-configurations-view.html).

### Request Body

`application/json`

- `JSON Object`
  - **useResourceIdFormat** `boolean` Optional

    Mandatory. Must be true to activate the new-format path. When false, use the `targets` array (legacy path) instead.

  - **appendTargets** `boolean` Optional

    Optional. When true, new targets are appended to the existing target list; duplicates are silently skipped. When false (default), existing targets are fully replaced by the supplied list.

  - **targetDetails** `JSON Object` Optional

    Mandatory when `useResourceIdFormat=true`. Target descriptor with type and resource IDs. Must NOT be combined with `targets` in the same request.

## Sample Request

```curl
curl --request PUT \
  --url https://appdomains/dcapi/target/{collectionId}/modifyTargets \
  --header 'Accept: application/modifyTargets.v1+json' \
  --header 'Authorization: Zoho-oauthtoken  d92d4xxxxxxxxxxxxx15f52' \
  --header 'Content-Type: application/modifyTargets.v1+json' \
  --data '{}'
```

## Sample Request Body

### Replace all targets for a computer-type collection with three resource IDs

```json
{
  "appendTargets": false,
  "useResourceIdFormat": true,
  "targetDetails": {
    "isDomainMainTarget": false,
    "values": [
      1001,
      1002,
      1003
    ],
    "type": "computer"
  }
}
```

### Append new user resource IDs to an existing user-type collection's target list

```json
{
  "appendTargets": true,
  "useResourceIdFormat": true,
  "targetDetails": {
    "isDomainMainTarget": false,
    "values": [
      2005,
      2006
    ],
    "type": "user"
  }
}
```

## Response Parameters

### HTTP Code 200

Response Body: `application/json`

- `JSON Object`
  - **collectionId** `long`

    The collection ID whose targets were updated. Fetch from [Get Configurations View](https://www.manageengine.com/products/desktop-central/help/api/cloud/deployment-fw-get-configurations-view.html).

  - **totalTargets** `string`

    Total number of assigned targets after the update operation (after APPEND merge or REPLACE).

  - **mode** `string`

    Update mode applied — `APPEND` when `appendTargets=true`, `REPLACE` when `appendTargets=false` (default).

  - **status** `string`

    Confirmation string — always `Updated` on success.

### HTTP Code 400

Response Body: `application/json`

- `JSON Object`
  - **error_code** `string`

    `CONFIG_INVALID_INPUT_DATA`: request payload validation failed. Possible causes: missing required field (`useResourceIdFormat`, `targetDetails`, `targets`, `type`, or `values`); mutual-exclusivity violation (`targets` and `targetDetails` both supplied); unsupported target type (not `computer` or `user`); filter type mismatch between request and collection type; invalid, non-managed, or out-of-scope resource ID in values array; unresolved name/domain pair; or empty values array.

  - **error_description** `string`

    Specific message describing the first validation failure encountered.

### HTTP Code 401

Response Body: `application/json`

- `JSON Object`
  - **errorCode** `long`

    Unauthorized error code: credentials missing, expired, or invalid.

  - **errorMsg** `string`

    Authentication failure reason.

### HTTP Code 500

Response Body: `application/json`

- `JSON Object`
  - **error_code** `string`

    `CONFIG_INTERNAL_ERROR` or `SERVICE_NOT_AVAILABLE`: unexpected failure during target resolution, target payload generation, or collection update.

  - **error_description** `string`

    Message describing the internal server error. Contact your administrator.

## Possible Response Codes

- `200` HTTP code
- `400` HTTP code
- `401` HTTP code
- `500` HTTP code

## Sample Responses

### HTTP 200

#### REPLACE mode — targets fully replaced with the supplied IDs

```json
{
  "mode": "REPLACE",
  "totalTargets": 3,
  "collectionId": 12345,
  "status": "Updated"
}
```

#### APPEND mode — new targets merged into the existing list

```json
{
  "mode": "APPEND",
  "totalTargets": 7,
  "collectionId": 67890,
  "status": "Updated"
}
```

### HTTP 400

#### One of the supplied resource IDs is invalid, non-managed, or out of the technician's scope

```json
{
  "error_description": "Resource ID 9999 is invalid, not managed, or out of your scope.",
  "error_code": "CONFIG_INVALID_INPUT_DATA"
}
```

#### The requested target type does not match the collection's existing type

```json
{
  "error_description": "Filter type mismatch. Collection is of type 'Computer' but request contains type 'User'",
  "error_code": "CONFIG_INVALID_INPUT_DATA"
}
```

### HTTP 401

#### User lacks write role for this configuration type

```json
{
  "error_description": "Access denied - You are not allowed to access the requested resource.",
  "error_code": "UAC_UNAUTHORIZED"
}
```

### HTTP 500

#### Unexpected failure during target payload generation or collection update

```json
{
  "error_description": "Error validating resource IDs. Contact administrator.",
  "error_code": "CONFIG_INTERNAL_ERROR"
}
```

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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.