Below, we detail the most frequent errors when simulating flows, their probable causes, and how to solve them quickly.
⚠️ Error: The simulator stops or shows strange behavior
💡 Probable cause: One of the most common causes is that one of the branches of an Evaluate response component is empty or without a defined value. This occurs, for example, when you create a condition based on buttons or options, but you don't connect any action or next block to that branch.
🧩 Typical example:
You have a message with three buttons: "Yes", "No", and "Maybe".
You only connected actions for "Yes", "No", and "Maybe" but not for "Other".
The "Other" branch was left disconnected and empty.
Result: When simulating that flow, the journey is cut off or a system error is displayed because the simulator cannot find logic to continue.
✅ Suggested solution: Make sure to complete or connect all branches of the evaluator before starting the simulation. If any option does not require complex action, connect it to a End of Flow component, or simply delete the original button if it is not necessary.
🛠️ General recommendations to avoid errors when simulating
To ensure smooth simulations without interruptions, follow this checklist:
🔹 Complete the branches: Carefully review that all evaluators have defined actions in each route.
🔹 Check for duplicates: If you duplicated an existing flow, validate that the buttons and branches are still correctly linked to their respective evaluators.
🔹 Use test campaigns: Use internal campaigns with your team before activating large real flows.
🔹 Validate your variables: Make sure that the information fields you are using in conditionals are correctly created and configured in your environment.
📌 Extra tip: The simulator is an excellent tool to validate the journey and visual logic of your flow, but it does not replace a real test. Whenever possible, perform real tests by sending the flow to your own WhatsApp number before publishing it to production.
Simulate successfully and avoid surprises! 🚀
Keeping your branches complete and following these best practices ensures a flow without blocks. Perform safe tests in Flowbuilder and launch your automations with complete confidence and precision. ✅