Description

When working with workflows, it is possible to create validators based on Regular Expressions. However, unlike other validators such as the Field Required validator, it is not possible to create custom error messages.

Suggestion of Improvement

The default error message may not be as informative as it could. It would be nice to have the ability to create a custom error message as a way of ensuring that, if a transition failed because of a validator, the user would know exactly how to proceed to prevent it from failing.

Why is this important

Having this would make the process of transitioning issues more user friendly in case something failed.

Being able to define a custom message allows users to create a more straightforward answer.