From Forum Nokia Wiki

ID	KIC000535	Creation date	December 29, 2006
Platform	Series 40 1st Edition, Series 40 2nd Edition, Series 40 3rd Edition, S60 1st Edition, S60 2nd Edition, S60 3rd Edition	Devices
Category		Subcategory

Keywords (APIs, classes, methods, functions):

Description

When content has been delivered using OMA DRM v1.0 separate delivery, the only way to send the rights object is through a WAP Push message.
E-mail, browser, and MMS are not suitable ways to deliver the rights object to the device.