snsTopicArn

The Amazon Resource Name (ARN) of the SNS topic to which Image Builder sends image build event notifications. Specify a standard topic. Image Builder doesn't support FIFO topics. Image Builder validates the topic when you create or update the configuration. You must have permission to publish to the topic.

EC2 Image Builder can't send notifications to SNS topics that are encrypted using keys from other accounts. If your SNS topic is encrypted, the key must be owned by the same account that owns your Image Builder resources.