Global variable declaration option 2 You can declare global catalog variables using the Service Catalog. Navigate to Service Catalog > Item Variables. The list of variables that appears in the workspace has a default filter of Cat Item != <blank>. Change the filter to Cat Item = <blank> and run the query. The catalog variables that appear are available to any catalog task that is initiated from within a workflow. Click New to create a new variable. Leave the Cat Item field blank. Select the Global check box. Click Submit. Also see, Global variable declaration option 1.