Business Services Online, Part 2 Business Services Online: The Joy of Using BSO - Part 2 Now that you have registered to use Social Security’s Business Services Online (BSO), you can now access one of the most popular features in BSO – the Social Security Number Verification Service (SSNVS). With SSNVS, you will be able to: Verify up to 10 names and SSNs online and receive immediate results with no limit to the number of times you may use the SSN Verification web page within a session; and, upload electronic files of up to 250,000 names and SSNs and usually receive results the next government business day. This webcast will provide step-by-step instructions on how to use SSNVS. (Javascript is required to view Mediasite content)