The FRED series Commercial Paper - Liabilities - Balance Sheet of Nonfarm Nonfinancial Corporate Business is now known as Nonfinancial Corporate Business; Commercial Paper; Liability.
The source series id is FL103169100.Q.
This series appears in Table B.103. 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; Commercial Paper; Liability, Level [CPLBSNNCB], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CPLBSNNCB, April 18, 2019.