On page three of the survey, each type of service covered by the survey has a number corresponding to it (for example, advertising services are reported under service code 1). If you sold advertising services, in the space provided below “Service Code” in column three of Schedule A you would enter the service code 1 for advertising services. If you check the “yes” box in Step 1, then enter the service code associated with that service on Schedule A (U.S. Reporter’s Sales of Selected Services to Unaffiliated Foreign Persons).