If you’ve created project fields for your project you can apply them to document types and specify if they are mandatory.
If you’ve created project fields for use in Mail, Documents, Packages and Field, you can assign them to document types. This saves project participants time and effort.
Not using project fields? You'll need to create them first.
Things to note:
Optional: Configure autonumbering on your document type
Use autonumbering to generate a unique document number for uploaded documents of this type.
In order to add a project field of this document type to the scheme, it must be mandatory and codes must be enabled. Codes are enabled within the project field edit window shown.