Scheduled webi report error in dashboard

Hi ,

we are using SAP BW as backend and Dashboard is created using Live ofive connectivity with latest instance of scheduled report which is scheduled every morning.

But some of the reports scheduled is failing and throwing this error as

A database error occured. The database error text is: (CS) "Fail to create an instance of Job" . (WIS 10901)

This is occurring many times

Because of this while opening dashboard it throws error

The current refresh option requires a report instance that does not exist. (LO 26301)

Regards

Gaurav Mang