This field populates from the Document Master Function. The User must click on the up and down arrows to add a new Component Document to create a Lower Level Structure for a Parent Document. By default the Type populates also from the Document Types function and can't be changed. The Document Number field has a maximum of 50 characters (which is of importance when the document was first added in the Master Data Tab). The User will only be allowed to build a structure if the Parent Document allows lower levels. Inactive Documents in the structure will be displayed in red