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To test the message flow, right-click the orchestration editor (outside the microservices and ports) of the running event process, and click the Test Message option. The Test Message dialog box that gets displayed allows selecting any source port, while the target port selection allows only "output ports" and "topics". Refer to the next section to know how to test the message flow between ports.
Figure 1: Right-click context menu showing the Test Message option on a running event process
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