What’s the difference between the Merge Action and Split-Merge Block?

• A. The Merge Action cannot be used from the automation writer port
• B. The Merge Action cannot be used with Multiple Triggers
• C. The Split-Merge block will output a single message whereas the merge does not
• D. All of the above

Answer: (D)

The difference comes from how these elements handle flow, triggering, and output. The Merge Action isn’t available from the automation writer port, because that port is for producing outputs, not for initiating a merge operation within the flow. It also isn’t compatible with multiple triggers, since a merge is intended to be driven by a single triggering event to avoid ambiguity in combining inputs. By contrast, the Split-Merge block is designed to consolidate inputs into a single downstream message, producing one output stream rather than multiple outputs. Because of these behavior and capability differences, all of the statements are true.