# Update a snapshot

**POST /_ml/anomaly_detectors/{job_id}/model_snapshots/{snapshot_id}/_update**

Updates certain properties of a snapshot.

## Required authorization

* Cluster privileges: `manage_ml`



## Servers
- http://api.example.com: http://api.example.com ()


## Authentication methods
- Api key auth
- Basic auth
- Bearer auth


## Parameters

#### Path parameters
- **job_id** (string)
  Identifier for the anomaly detection job.
- **snapshot_id** (string)
  Identifier for the model snapshot.


## Body parameters
Content-type: application/json

- **description** (string)
  A description of the model snapshot.
- **retain** (boolean)
  If `true`, this snapshot will not be deleted during automatic cleanup of
snapshots older than `model_snapshot_retention_days`. However, this
snapshot will be deleted when the job is deleted.

## Responses
### 200: 

#### Body Parameters: application/json (object)
- **acknowledged** (boolean)
  
- **model** (object)
  


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