Issue
Activity Numbers in Nintex Promapp may appear to be numbered incorrectly or missing numbers as shown in the image provided below:
Resolution
Change the role in the activity that does not have a number from Non Display to Unassigned or another role that is appropriate.
Additional Information
The Non Display role is used when the activity is not part of the process flow - and in turn shouldn't be shown on the map - sometimes this is used to provide keywords or other information.