# Select Objects for Change Notifications with Metadata API and Tooling API

Use PlatformEventChannelMember in Metadata API or Tooling API to create or retrieve object event selections for the default standard channel or a custom channel. The default standard channel, ChangeEvents, corresponds to the selections that you configure in Setup in the Change Data Capture page. For a custom channel, the selections are set when you create the channel member. The `SelectedEntity` field in PlatformEventChannelMember represents a selected event.

:::note
Selections made in PlatformEventChannelMember for a custom channel aren’t reflected in the Change Data Capture page. The Change Data Capture page shows selections only for the default standard channel, ChangeEvents, and not for custom channels. To find out which entities are selected for custom channels, perform a SOQL query on [PlatformEventChannelMember](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/tooling_api_objects_platformeventchannelmember.htm) in Tooling API.
:::

To learn how to select objects with Metadata API, see [PlatformEventChannelMember](https://developer.salesforce.com/docs/atlas.en-us.api_meta.meta/api_meta/meta_platformeventchannelmember.htm) in the [*Metadata API Developer Guide*](https://developer.salesforce.com/docs/atlas.en-us.api_meta.meta/api_meta/meta_intro.htm).

To learn how to select objects with Tooling API, see [PlatformEventChannelMember](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/tooling_api_objects_platformeventchannelmember.htm) in the [*Tooling API Developer Guide*](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/intro_api_tooling.htm).

To learn about custom channels, see [Compose Streams of Change Data Capture Notifications with Custom Channels](/docs/platform/change-data-capture/guide/cdc-custom-channel.md), [PlatformEventChannel](https://developer.salesforce.com/docs/atlas.en-us.api_meta.meta/api_meta/meta_platformeventchannel.htm) in the [*Metadata API Developer Guide*](https://developer.salesforce.com/docs/atlas.en-us.api_meta.meta/api_meta/meta_intro.htm), and [PlatformEventChannel](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/tooling_api_objects_platformeventchannel.htm) in the [*Tooling API Developer Guide*](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/intro_api_tooling.htm).

Starting with API version 47.0, you define channel member components and channels separately in Metadata API. In API version 45.0 and 46.0, members are included in the PlatformEventChannel component.

**See Also**

- [Change Data Capture Allocations](/docs/platform/change-data-capture/guide/cdc-allocations.md)