<p>The ARN of the CloudWatch resource that you're removing tags from.</p> <p>The ARN format of an alarm is <code>arn:aws:cloudwatch:<i>Region</i>:<i>account-id</i>:alarm:<i>alarm-name</i> </code> </p> <p>The ARN format of a Contributor Insights rule is <code>arn:aws:cloudwatch:<i>Region</i>:<i>account-id</i>:insight-rule:<i>insight-rule-name</i> </code> </p> <p>For more information about ARN format, see <a href="https://docs.aws.amazon.com/IAM/latest/UserGuide/list_amazoncloudwatch.html#amazoncloudwatch-resources-for-iam-policies"> Resource Types Defined by Amazon CloudWatch</a> in the <i>Amazon Web Services General Reference</i>.</p>