When creating a multi-page data app you can in each widget node check whether the value inserted in the user meets some requirement. Despite this you need a more complex logic when you need to validate combination of values of different widgets. To solve this you need to place validation nested components in the following component page to check the input inserted in the previous component. Then you can trigger breakpoints to make the workflow fail with a custom error so that the user is informed and can go back to change those settings.
Used extensions & nodes
Created with KNIME Analytics Platform version 4.5.1
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