Hi Lokeshwaran Mahendiran,
You can’t fully suppress Mendix’s built‑in required field validation if you’ve set “required” on the entity attributes . To rely only on your microflow logic, remove the “required” property from the domain model and widgets, and handle all checks in your custom validation microflow. That way Mendix won’t trigger the default popup, and you can show field‑level feedback only when the user opens the relevant page.
I hope this helps