Why is it that some (possibly most?) geoprocessing tools do not allow output shapefile names to start with a number (for example, Dissolve and Spatial Join), while others do (for example, Rename)? Also, why can you start a shapefile name with a number while exporting data (Data -> Export Data)? It does not seem to be a shapefile limitation, it seems to be a individual geoprocessing tool "check".
I ask because my organization's project numbers (surprise!) start with numbers, and it would make sense to start file names with the project number.
Message was edited by: Darren Wiens *This thread started off wondering why file names could not start with numbers, but it turns out they can.