Diagnosis
The manual table maintenance (SE16) was switched on for table &v1&,although this was not intended.

System Response
Incorrect entries in table &v1& lead to serious errors. Under certaincircumstance a single incorrect entry can mean that absolutely no moredata can be displayed for the affected InfoCube.

Procedure
You should definitely determine who made the changes. Check the changedentries. Switch the manual maintenance (SE16) back off.