If you haven't opened or used the wrong toner then you can call Xerox for an exchange. Just explain to them that you purchased the wrong thing and need to exchange it for the correct toner.
I use only genuine Xerox toner. I purchased by mistake a 106R01083 which is for a 6300, and I have a 6360. The toner cartridge looks the same except the 106R01219 has a large compartment on the top to hold more toner. Will it work to use the 106R01083 in my 6360 or is the software chip going to tell the printer that it has incompatible toner installed? I don't want to pull the tab to find out in case I need to return it. If I can't use it I will be without a laser printer for several days, and we need it for our business.