Detail members can only contain static inner members

Hi,
'The tablix 'Table1' has a detail member with inner members. Detail members can only contain static inner members. 

This is the one of the generic Error in SSRS 2008. This error will come when we are putting a table inside another table and forget to gives the group property of a parent table. It is always coming when we are having a table inside another table and if parent table does not have any group. So whenever we are using a table in side another table that time it is necessary to give the group property to the parent table.