The activity number on the WBS is a random number which is quite difficult to remember when using them on timesheets, etc. It would be good to have a value to be displayed along with the activity number text that would make more sense while entering transactions.
The activity code is the new field added per activity. This modification tracks the WBS ID, which is 1, 1.1, 1.2, the WBS position as well as the activity number which is a number like 5436212, 5685365, and the activity code. Activity code is a field which allows the users to enter any value manually and is now available on the WBS form.
This feature also includes the capability to merge a WBS structure from any project to the current project, not only the entire WBS, but part of the WBS too. There was no ability to quickly copy part of an existing WBS into the current WBS, which has been addressed with this feature.