How to find the Unearned Revenue Rollforward Report in RevRec?
This report increases deferred revenue with new billings and decreases the total as revenue is earned. Navigate to Reports from the main menu. Click the Revenue tab and select Unearned Revenue Rollforward.
Click Reports on the main menu. Click the Revenue tab and select Unearned Revenue Rollforward.
Add attributes or metrics to display granular information, such as deferred and earned revenue by the sales order.
Refer to this link on how to add Custom Fields to a Report.