I created an Universe in BO-Designer. After that I run a report under BO, but I got the message: ikompatible objects. I created aliases, but it didn't help.I tried work with contexts,but I'm not sure,how does it realy work...Can anybody help me?

Hi Konwin,

Context is a path in which tables are joined together in such a way that the objects used in a BO reports are fetched in one single query.

your report mst be throwing this error since more than one query is formed due to improper joins.

in the universe try to define these object under the same path or
try to normalize the schema by keeping one measure table and have it joined with all other dimension tables.