I am currently using P6 v7.0. We have just created a project, for the finish milestone, we gave it a mandatory finish of August 23, 2013. All the predeccessor activities complete by August 21, 2013. Yet I am showing a total float of -1. Can someone please help me out??
Thanks!!
http://www.slideshare.net/InSyncConference/p6-version-7-tricks-and-traps
After looking the above reference I suggest avoiding mandatory constraints, they work differently to finish no latter than constraint and are to be used for some analysis but not for actual management and scheduling.