Service catalog variables Administrators and users with the catalog_admin role can define service catalog variables. A service catalog variable provides the ability to capture and pass on information about choices a customer makes when ordering a catalog item. Some variables can be defined to affect the order price, depending on the selected value. For example, a New PC catalog item can use a variable called "Memory", which provides choices to allow customers to select extra memory, for associated extra prices. Variables can be stored, accessed from multiple places, and passed between tasks in a process when fulfilling a request. Variables can be displayed on the Requested Item and Catalog Task forms after an item has been ordered. ServiceNow ITSA Suite provides a full set of variable types.