Cannot set a field that depends on other fields as invalid

[nicoabie]

Are you submitting a bug report or a feature request?

bug report

What is the current behavior?

I'm trying to use a mutator to set a field as invalid because the validity of that field depends on the validity of others. I've spent a large amount of time researching the documentation, stack overflow, the issues and de codebase and could not find a solution. Is that possible?

What is the expected behavior?

Be able to set a field as invalid

Sandbox Link

What's your environment?

Other information

[inovux]

Not 100% sure what you are trying to achieve :p could u share a sandbox link?

[michael-preuss]

trigger validation programmatically should be possible. form.change doesn't do it.