Step 3: Add the Amazon SNS topic and finish your rule
Next, add the target (the Amazon SNS topic) that you created in step 1 to the CloudWatch Events rule that you started in step 2.

To add the SNS topic and finish the CloudWatch Events rule
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In the Targets section, choose Add targets, and then change the default Lambda function to SNS topic.
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For Topic*, choose MediaConvertJobErrorAlert.
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Choose the Configure details button.
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For Rule definition, enter a name and description for your rule, and then choose Create rule.