State Reporting

Hi- my question is: we have certain vendors that have multiple payment sites (meaning AP might pay a certain invoices to a different address like a PO Boxes which might be in different states according to the invoice) for the same vendor. Do you report that payment to that particular state? The way our system handles it is that the paper forms sent to the recipient get consolidated with all invoice amounts for that specific vendor but when we generate our electronic file sometimes one vendor is in the file twice because there might be a state code attached to one payment and another state code attached to another payment but within the electronic file the address information for both the lines for that vendor is the same. I'm not sure how the system determines which state address to use in the file. Other times there is a state code attached to one line and no state code attached to the second line for the same vendor probably because the other payment was made to a state not participating in the Combined Filing. We have several issues like this and I want to make sure that we file it to the IRS correctly.

There are obviously a coupl . . .

Is Uniform Cleaning and Dry cleaning taxable? Do I pay retail sales tax? This is NOT a reportable or non-reportable question. This is a retail sales tax question.