call full_clean on change object save
@@ -145,6 +145,7 @@ class Change(models.Model):
raise ValidationError('%s must not be set if action is create or delete.' % field_name)
def save(*args, **kwargs):
+ self.full_clean()
if self.pk is not None:
raise ValidationError('change objects can not be edited.')
super().save(*args, **kwargs)
