Why do I get a 'Repositioning the field here will break the existing logic' error while I am designing the form?

Why do I get a 'Repositioning the field here will break the existing logic' error while I am designing the form?

You will encounter this error when you try to position the conditional formula field above any of the fields involved in its configuration. Since,  the condition is checked based on the answers of those form fields, we restrict this action as it breaks the logic.