# Update a Service Configuration

**PATCH /groups/{groupId}/apps/{appId}/services/{serviceId}/config**

Update a [Data Source](https://www.mongodb.com/ko-kr/docs/atlas/app-services/mongodb/) or
[Third-Party Service [Deprecated]](https://www.mongodb.com/ko-kr/docs/atlas/app-services/reference/services/)
configuration.



## Servers
- The root API resource and starting point for the App Services API.: https://services.cloud.mongodb.com/api/admin/v3.0 (The root API resource and starting point for the App Services API.)


## Authentication methods
- Token auth


## Parameters

### Path parameters
- **groupId** (string)
  An Atlas [Project/Group
  ID](https://docs.atlas.mongodb.com/tutorial/manage-projects/).
- **appId** (string)
  The ObjectID of your application.
  [The App Services API Project and Application IDs section](#section/Project-and-Application-IDs) demonstrates how to find this
  value.
- **serviceId** (string)
  The unique `_id` value of a service.


### Body: application/json (object)

- **clusterName** (string)
  The cluster name of the data source within. The name may be at
  most 64 characters long and must only contain ASCII letters, numbers,
  underscores, and hyphens.
- **readPreference** (string)
  The [read preference](https://www.mongodb.com/ko-kr/docs/atlas/app-services/mongodb/read-preference/) mode for read requests to the data source.
- **readPreferenceTagSets** (array[string])
  Target read operations to specific members of a replica set.
- **wireProtocolEnabled** (boolean)
  If true, clients may [connect to the app over the MongoDB Wire Protocol [Deprecated]](https://www.mongodb.com/ko-kr/docs/atlas/app-services/mongodb/wire-protocol/#connect-over-the-wire-protocol).


## Responses
### 204
Successfully updated.


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