Hi! We call nodeapi validate in the following situations: a) We are about to create a node. This is the first time nodeapi called on the page, before 'form pre'. b) We have just submitted the form. The node exists in $_POST only. c) We are about to edit a node. This is the first time nodeapi called on the page, before 'form pre'. d) We have just submitted the form. The node exists in the database and there is some update in $_POST. I propose that a) and c) begone and b) and d) be distincted. Regards NK