Activity designer variables

The ServiceNow Activity Designer enables users with the activity_creator role to create input variables, map them to values on a target host or endpoint, and then pass the data returned to other activities in a workflow through output variables.

The system populates these output variables with selected data from payloads returned from the target hosts through the use of parsing rules.
Note: Variable strings in the Inputs tab of the activity designer have a 255 character limit.