Anodized finishes are very hard even though the aluminum underneath is soft. Often even a tool will leave what appear to be scratches, but are in reality a small amount of metal that came off the tool rather than an actual scratch.
If this is the case, Scotchbright, which is a scubby pad made by 3M, is handy for removing the material caught in the grooves of the finish. Treat the pad with a little water and rub it gently on the finish *in the direction of the grain*. If not a real scratch, it will come right out. BTW rubbing too hard will take of the finish, so be careful. Good Luck!