# Adding a source identifier to an Amazon RDS event notification subscription
<a name="USER_Events.AddingSource"></a>

You can add a source identifier (the Amazon RDS source generating the event) to an existing subscription.

## Console
<a name="USER_Events.AddingSource.Console"></a>

You can easily add or remove source identifiers using the Amazon RDS console by selecting or deselecting them when modifying a subscription. For more information, see [Modifying an Amazon RDS event notification subscription](USER_Events.Modifying.md).

## AWS CLI
<a name="USER_Events.AddingSource.CLI"></a>

To add a source identifier to an Amazon RDS event notification subscription, use the AWS CLI [`add-source-identifier-to-subscription`](https://docs.aws.amazon.com/) command. Include the following required parameters:
+ `--subscription-name`
+ `--source-identifier`

**Example**  
The following example adds the source identifier `mysqldb` to the `myrdseventsubscription` subscription.  
For Linux, macOS, or Unix:  

```
aws rds add-source-identifier-to-subscription \
    --subscription-name {{myrdseventsubscription}} \
    --source-identifier {{mysqldb}}
```
For Windows:  

```
aws rds add-source-identifier-to-subscription ^
    --subscription-name {{myrdseventsubscription}} ^
    --source-identifier {{mysqldb}}
```

## API
<a name="USER_Events.AddingSource.API"></a>

To add a source identifier to an Amazon RDS event notification subscription, call the Amazon RDS API [`AddSourceIdentifierToSubscription`](https://docs.aws.amazon.com/AmazonRDS/latest/APIReference/API_AddSourceIdentifierToSubscription.html). Include the following required parameters:
+ `SubscriptionName`
+ `SourceIdentifier`

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for Amazon RDS. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query AmazonRDS` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).