Rule Evaluation Sequence
Rule evaluation follows these steps:
- The authorization system sends the transaction to the Scoring Server.
- The transaction and the score results are passed to the Rule Engine.
- In the Rule Engine, the UDV calculation rules are executed first.
- Then the Decision rules for the data feed are executed.
- After the appropriate data feed rules are evaluated, then the Crossfeed rules are executed.
![](GUID-A3267FF0-1A2D-4CCE-B4E9-13EB38D8F406-low.png)