Hi I've just noticed that the supplier put the uncompleted zip code, he just put 40475 only, while it is 40475-2912. I tried to contact him to edit and correct the zip code, but I couldn't. am I in trouble? is it a big deal? will the product delivered to the buyer?
It will be. The last 4 digits are used to identify smaller areas (among office or apartment buildings, for instance). With or without them your mail will still be delivered.