1. This isn't an exception because a filename consists of a name plus extension. I have parts and assemblies with the same name without violating this rule. When you have the same name + extension you have the same filename and this will confuse SW when you have two different documents with the same filename in different folders. My question is, what are you buying, the sheetmetal assembly or the bent up part? 3. I am not sure this is a necssity. When a single part holds more than one configuration you may have several distinct parts as configurations and there will be more than on drawing for those parts. Each drawing may have a filename that can be different from the part document. The PDM program should be able to maintain the references consisten with SW external references. I have a macro that will list all the documents in an assembly along with which configuration in each document is active 4. Filenames should contain no meaning other than perhaps length and sequence. 5. File descriptions should follow a standard methodology to allow finding similar parts by searchin description.