Invoking Business Rules in Orchestrations
You can invoke a policy (or rule set) from an orchestration by using the Call Rules shape. The policy invokes the rule engine, which operates on the rules in the policy.
In addition to using Call Rules, the rules engine can be programmatically called from expression code, for example, in an Expression or Message Assignment shape. For information about programmatically executing policies, see How to Execute Policies.
This section describes configuration information and the procedures required to call and execute a business policy from a BizTalk orchestration.