The FRED series Real Estate - Assets - Balance Sheet of Nonfarm Nonfinancial Corporate Business is now known as Nonfinancial Corporate Business; Real Estate at Market Value.
The source series id is FL105035005.Q.
This series no longer appears in Table B.103, but is updated in the underlying data set.
This data still updates, to see data for this series, go to https://fred.stlouisfed.org/series/NCBEILQ027S.
For further information see the assistance provided in the guide to the Financial Accounts at http://www.federalreserve.gov/apps/fof/.
Board of Governors of the Federal Reserve System (US), Nonfinancial Corporate Business; Corporate Equities; Liability, Level [MVEONWMVBSNNCB], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/MVEONWMVBSNNCB, February 20, 2018.