**To validate configuration settings** The following command validates a CloudWatch custom metrics config document:: aws elasticbeanstalk validate-configuration-settings --application-name my-app --environment-name my-env --option-settings file://options.json ``options.json`` is a JSON document that includes one or more configuration settings to validate:: [ { "Namespace": "aws:elasticbeanstalk:healthreporting:system", "OptionName": "ConfigDocument", "Value": "{\"CloudWatchMetrics\": {\"Environment\": {\"ApplicationLatencyP99.9\": null,\"InstancesSevere\": 60,\"ApplicationLatencyP90\": 60,\"ApplicationLatencyP99\": null,\"ApplicationLatencyP95\": 60,\"InstancesUnknown\": 60,\"ApplicationLatencyP85\": 60,\"InstancesInfo\": null,\"ApplicationRequests2xx\": null,\"InstancesDegraded\": null,\"InstancesWarning\": 60,\"ApplicationLatencyP50\": 60,\"ApplicationRequestsTotal\": null,\"InstancesNoData\": null,\"InstancesPending\": 60,\"ApplicationLatencyP10\": null,\"ApplicationRequests5xx\": null,\"ApplicationLatencyP75\": null,\"InstancesOk\": 60,\"ApplicationRequests3xx\": null,\"ApplicationRequests4xx\": null},\"Instance\": {\"ApplicationLatencyP99.9\": null,\"ApplicationLatencyP90\": 60,\"ApplicationLatencyP99\": null,\"ApplicationLatencyP95\": null,\"ApplicationLatencyP85\": null,\"CPUUser\": 60,\"ApplicationRequests2xx\": null,\"CPUIdle\": null,\"ApplicationLatencyP50\": null,\"ApplicationRequestsTotal\": 60,\"RootFilesystemUtil\": null,\"LoadAverage1min\": null,\"CPUIrq\": null,\"CPUNice\": 60,\"CPUIowait\": 60,\"ApplicationLatencyP10\": null,\"LoadAverage5min\": null,\"ApplicationRequests5xx\": null,\"ApplicationLatencyP75\": 60,\"CPUSystem\": 60,\"ApplicationRequests3xx\": 60,\"ApplicationRequests4xx\": null,\"InstanceHealth\": null,\"CPUSoftirq\": 60}},\"Version\": 1}" } ] If the options that you specify are valid for the specified environment, Elastic Beanstalk returns an empty Messages array:: { "Messages": [] } If validation fails, the response will include information about the error:: { "Messages": [ { "OptionName": "ConfigDocumet", "Message": "Invalid option specification (Namespace: 'aws:elasticbeanstalk:healthreporting:system', OptionName: 'ConfigDocumet'): Unknown configuration setting.", "Namespace": "aws:elasticbeanstalk:healthreporting:system", "Severity": "error" } ] } For more information about namespaces and supported options, see `Option Values`_ in the *AWS Elastic Beanstalk Developer Guide*. .. _`Option Values`: http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/command-options.html