Vendors interested in competing for goods and services contracts with MassDOT should familiarize themselves with these documents. Contract information for vendors to departments of the Commonwealth of Massachusetts.Resources for executing contracts, contact lists, forms, and policies. If a Vendor Code has not yet been assigned, leave this. Ensure all terms are acknowledged before signing. How do I fill this out? To fill out the registration form, gather all required information and documents as specified in the instructions. HOW TO RECEIVE NOTICE OF BIDS, RFPs AND QUOTES ; c. 149 Standard Forms, Required Forms for Building Construction Contracts ; c. NOTE: This document must be included with your completed W-9 Form in order to be set-up as a City of.