**To create a group** The following ``create-group`` example creates a group resource named ``AdminGroup``. The group gets a filter expression that defines the criteria of the group as a segment related to a specific service causing a fault or an error. :: aws xray create-group \ --group-name "AdminGroup" \ --filter-expression "service(\"mydomain.com\") {fault OR error}" Output:: { "GroupName": "AdminGroup", "GroupARN": "arn:aws:xray:us-west-2:123456789012:group/AdminGroup/123456789", "FilterExpression": "service(\"mydomain.com\") {fault OR error}" } For more information, see `Configuring Sampling, Groups, and Encryption Settings with the AWS X-Ray API <https://docs.aws.amazon.com/en_pv/xray/latest/devguide/xray-api-configuration.html#xray-api-configuration-sampling>`__ in the *AWS X-Ray Developer Guide*.