Iam trying to validate the Detail Records in a Master Detail form. I have a check box in my Detail Section. I want to add the validation that either all the Detail records are Checked or all are Unchecked. To do this I have added valdation method on the Master Entity object but, this executes only when any attribute of the master record is changed but not when just it's detail record is updated or inserted. Please advise me where I can write this validation logic or how I can trigger to execute validation method when a child record gets updated.