The Vendor Name is what QB will use to generate the 1099's at year end. 

The Company name is only helpful when a search is performed. 

The problem we run into is when the Line 1 on the W9 is a different name than the Customer Name. 

Example: Line 1 on the W9 is listed as Joe Smith

Line 2 of their W9 lists Concrete Solutions.

Their invoices are all under Concrete Solutions - 

If you enter Concrete Solutions as the 1099 name, the IRS will kick it back because it's Joe Smith. 

BUT, if you enter Joe Smith as the Vendor Name in QB (correctly, because they're the 1099 recipient), then try to enter a bill under Concrete Solutions, it will try to create a NEW Vendor - bad juju to be sure. I am at a loss as to how to enter a bill if I don't know what the name on their W9 is.