public void setErrorMessage(String errorMessage) {
        this.errorMessage = errorMessage;
    }
<p>
The error message that describes why the instance could not be launched. For more information about error
messages, see <a href="https://docs.aws.amazon.com/AWSEC2/latest/APIReference/errors-overview.html.html">Error
codes</a>.
</p>

@param errorMessage
       The error message that describes why the instance could not be launched. For more information about error
       messages, see <a
       href="https://docs.aws.amazon.com/AWSEC2/latest/APIReference/errors-overview.html.html">Error codes</a>.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/DescribeFleetError.java