I am working in ArcMap 10.2.2. I have a shapefile with line features which I labeled with some vb code. The problem is when I zoom out there are labels that disappear, I have around 4000 features but I don't know how to keep all the labels. I would like to create some DDP (data driven pages) and it is important that all labels are in the created maps. Any suggestions how to do this?
You can force all labels to display by changing the placement properties.
Go to layer properties > Labels Tab > Placement Properties > Conflict Detection and tick on Place overlapping labels
It will look a mess when you zoom out but then you get all labels.