There have been many payments through PayPal, and they were all attached to the product "PayPal Sales" and are all part of deposits.

They are really for about four different products.  I would like to change the product to be more specific and match the real product.   What's the easiest way to change this (in an automated way if possible).  Also, for one of them, the vendor name was not specified. I can't change this either without running into an error.