GST Sales Contest 2021 CAT Machine Sales Registration Each qualifying machine sale claimed as Gov21SOURCWL must also be registered with GST to be considered in this contest. If you are a human and are seeing this field, please leave it blank. Fields marked with an * are required Serial Number * Transaction Date (MM-DD-YYYY) * Purchasing Entity * Item Sold * Dollar Amount * Salesperson's First Name * Salesperson's Last Name * Salesperson's Email * Dealership Name *