# Configure the application configuration parameters
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This section allows you to provide the details of your cross-Region failover support using AWS Elastic Disaster Recovery. AWS Resilience Hub will use this information to provide resiliency recommendations.

For more information about application configuration parameters, see [Application configuration parameters](app-config.md).

**To add application configuration parameters (Optional)**

1. To expand the **Application configuration parameters** section, choose the right arrow.

1. Enter the failover account ID in the **Account ID** box. By default, we have pre-populated this field with your account ID that is used for AWS Resilience Hub, which can be changed.

1. Select a failover Region from the **Region** dropdown list.
**Note**  
If you want to disable this feature, select "**–**" from the dropdown list.

## Next
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 [Add tags](add-tags.md)