Variable Type Default Value Description d2l.Tools.HoldingTank.Grades.ExportMessage OrgUnit Send Course Grades to Learner Information System for your REVIEW and final approval. Text displayed in grade book as instructions of where the export to SIS is sending the data. d2l.Tools.HoldingTank.Log.DaysToKeep Org 7 Days of log entries to keep Clear log button is selected.