Describe Instances input variables These variables determine the behavior of the activity. Field Description Account Name of the account from which to retrieve instance information. Region Endpoint of the Amazon-defined region from which to retrieve the instance information. Instance The ID of a single instance from which to retrieve information. Instances The comma separated IDs of the instances to describe. If this variable is blank, ServiceNow returns information about all instances on this account. Sensor script The script to execute after the request is made and a response is received. The activity stores instance information in the instances scratchpad variable.