Diagnosis
You want to generate default values for absence quotas. However, youhave not specified the complete validity period for the quota in theMaintain time data initial screen.

System Response
The system attempted to determine the validity period using theCustomizing for the Validity period for absence quota defaultvalues, but could not find a valid entry. The system therefore couldnot determine the validity period, and exited the transaction.

Procedure
Check your Customizing settings.