Executing Queries in the Background 
If you want to execute the query as a background job, choose Exec. in background.
When scheduling a job, you must define a variant and specify the start time.
Caution
Note that background processing always requires a variant. If you have not yet created any variants for the query, you can do so on the background processing initial screen (see Variants).
For information on all other options and processes, see the online documentation Getting Started with the SAP System.