For Java and .NET environments, you can use interactive live preview tools to find business transaction entry points:

• Business transaction discovery sessions stream live data from the node to the Controller UI to help you make instrumentation decisions. These sessions display transactions based on all transaction detection rules active for the node.

• For certain types of entry points, custom match rule live preview enables you to preview transactions based on applying a single transaction detection rule on a node.

Business transactions within the context of the Live Preview, called transient transactions, do not persist after the Live Preview ends. Business transaction discovery sessions let you apply or discard rule changes when you end the session. Custom match live preview rules apply after you save the rule.

Some transient transactions may invoke exit calls to the same node where the Live Preview session is running. In certain cases, the agent may discover additional transient transactions and uninstrumented code on the downstream segment:

• The exit call and corresponding entry point are automatically discovered exit and entry points like HTTP or Web Service.
• Rare cases of custom activity in-process calls.