Some series identifiers for data in the Flow of Funds accounts will change to make the coding more consistent across instrument categories. In addition, new series have been added while others have been discontinued. A list of these code changes, effective with the release on September 20, 2012, is available online at: http://www.federalreserve.gov/Releases/Z1/preview/Code_changes A preview of the coded tables for the September 20, 2012 Z.1 release is available online at: http://www.federalreserve.gov/Releases/Z1/preview/Coded/index.htm