Hi Sri,
Put filter on the column which you dont want in the report.
ex [column] is not null and [column]<>0
this filter at the report query level will remove these records so you will not get any multi value error and also you see only not null and not zero records.
But if your requirement is to filter only the records which are giving multi value then can you do summation on the column. Because if you do summation then there will not be any affect of 0 and null values.
