Cannot set a field that depends on other fields as invalid

### 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

The issue names no source file, test, reproduction, or environment. Start by reproducing the requested mutator behavior in the repository's existing examples or tests, then trace how dependent-field validity is represented. Done means the supported behavior is defined and covered by a regression test, but the issue does not specify the expected implementation.

Written by the indexing model from the issue text.