# Creating elastic channels for Amazon Chime SDK meetings
Creating elastic channels

You use the `ElasticChannelConfiguration` field in the [https://docs.aws.amazon.com/chime-sdk/latest/APIReference/API_messaging-chime_CreateChannel.html](https://docs.aws.amazon.com/chime-sdk/latest/APIReference/API_messaging-chime_CreateChannel.html) API to create an elastic channel. Once you create an elastic channel, you create channel memberships.

**Note**  
For non-elastic channels, the `AppInstanceUser` that creates the channel is automatically added to that channel as a member and moderator. For elastic channels, the channel creator is only added as a moderator.
You can't update an `ElasticChannelConfiguration` once set.
You can't update a channel from elastic to non-elastic and vice-versa.
You can't include a list of member ARNs in a [https://docs.aws.amazon.com/chime-sdk/latest/APIReference/API_messaging-chime_CreateChannel.html](https://docs.aws.amazon.com/chime-sdk/latest/APIReference/API_messaging-chime_CreateChannel.html) API request. However, you can include a list of moderator ARNs.
You can't create an `UNRESTRICTED` type elastic channel.