In order to get paid, individuals and/or companies first must be added as vendors to the system. In most cases, this requires a UMW-9 form. You may notice that the UMass form (UMW-9) is slightly modified from the standard IRS form (W-9), such that it includes a blank for an e-mail address. This is the preferred form because either an e-mail or fax number is required in order to add a vendor into Buyways; without this piece of information, the vendor will not show up in a Buyways search, and consequently cannot be paid via a purchase order. Once a vendor has been added, s/he does not need to be re-added with every subsequent payment, unless they have been inactive for an extended period of time or their contact information has changed.