Out of curiosity, what do you think the expected behaviour should be in the case that a user attempts to create/update an entity that does not meet the validation criteria?
Should the user be prevented from creating/saving the entity in that state, or should the deficiency be flagged to the user whilst not preventing them?
Given that Fibery doesn’t have forms for submitting new/changed data, there isn’t currently the possibility to prevent the data from being registered (e.g. with a greyed-out ‘Submit’ button or similar)