hello I make a synch with mendix database , then i drop the new column i have added from the database itself (SQL server ) after i run the application again from mendix it runs successfully , but it throughs an error regarding to that column that has been deleted ( the column is not defined ) what shall i have to do in this case ??
You should never drop tables from the database itself because then you corrupt your model. You should have dropped the entity from within your Mendix model. You could try to remove it also from your Mendix model and then run again but that is no guarantee.