Parent Child links

Hello,

    I am facing a problem with the the parent child relationships between tables. I have 4 tables in question, where i find the parent child relationship works between table 1 and table 2  and also between table 3 and table 4. The problem comes when I want the parent child relationship to work between tables 2 and 3. This is not working.

This is in Siebel 7.5

Does anyone have any idea's on how to fix this issue.

I don't understand why the relationship works well between two tables but when you try and put more parent child links into the mix the system does not handle it.