SAP BPC 10 NW: Validation Business Rule

Hi Experts

I was looking for validation business rule in BPC 10 but unlike 7.5, i could not find this rule. The documentation has validation as a script logic section but the rule it uses is not defined, or atleast i could not find.

Can you help me in identifying how to find off balance and how to check if the Balance sheet matches correctly or not.

Regards

-SM