Reset/Revert entity attribute(Not entity itself)

Hi,

Is there a chance to revert an attribute of a entity without reverting the whole entity?

Requirement:

There is an option for the user to update/change/edit several attributes on a web UI screen.

Upon changing a value of a drop down will trigger a validation check. If the validation fails that should reset only the drop down to original but leave all the remaining fields as they are.

Is this achievable?

Thanks &

Kind regards,

Vamsi