A breakdown source is defined as a set of records from a table or database view or as a bucket group.
Multiple breakdowns can use the same breakdown source.
Breakdown sources specify which unique values, called breakdown elements, a breakdown contains.
Breakdown source records have a related list that lists the breakdowns that are based on that source.
You can create a breakdown by selecting the ‘New’ button while in this list. The list works like the
Indicators list on indicator source records.
Other options in this question do not exist on the breakdown source form.
After you create breakdowns that use this source, these breakdowns are listed in the Breakdowns
tab.
Reference:
https://docs.servicenow.com/bundle/quebec-now-intelligence/page/use/performanceanalytics/task/t_DefiningABreakdownSource.html
