IDT Issue to join 2 cubes in a universe

Hello,

In IDT, I want to create an universe based on 2 BW cubes.

In the data foundation, I create manually a join between these 2 cubes.

But when I check the sql, I have the following error msg :

"The query does not reference any table when attempting to build the WHERE clause. (WIS 00022)"

I created 2 relationnal connection based on JCO connector.

We are on BI 4.0 sp6 patch 2 (winx64). I use admin user with all right.

I didn't find anything in SAP note.

Any idea ?

Thank you,

Cyrille