I'm trying to dissolve a layer with a LOT of polygons to a single multipart so I can place random points throughout (but at less than 1pt/polygon).
However, ArcMap seems to have decided it can't dissolve ALL of the features, just subsets. I've tried in ArcMap, and with a standalone Python script. I've tried without using a dissolve field, and with a dissolve field that has the same value for every feature. Multi-part is on. I can't see anything blocking it from completing the process.