iLog engine - how it works

Hi,

How iLog engine works and how the constrain rules configured are fired, can we debugg what all rules are fired and which are having conflict.

We would like to understand how Siebel is processing the constraint rules and how the explanation are shown in the error msg screen.

In general, our CableTV root product has several child/grandchild products and hundreds of constraint rules defined against these child/grandchild products.  Some of the constraint rules are complex acting on different products.  How is Siebel evaluating these rules?  Are all the hundred rules being evaluated each time an item is selected?