Because Helpdesk 6.0 is a discontinued product (as of September 4th, 2011), new licenses are not able to be sold or generated any longer for customers. Most Helpdesk licenses are not permanent and are set to expire, which is standard with most Altiris products. Once the expiration date (AUP) arrives, Helpdesk reverts to a limited mode. New incidents cannot be created but existing ones can be edited. This then severely limits the practical use of Helpdesk because most functions are then disabled. Additional information about this can be found here:
Does Helpdesk 6.0 still work when its license expires?
Where can I find technical support for the discontinued Altiris Helpdesk 6.0 product?
Can Helpdesk 6.0 licenses be used for ServiceDesk 7.x, or can ServiceDesk 7.x licenses be used for Helpdesk 6.0?