Effective March 31, 2016, the FAR requires the use of new Activity Address Codes (AACs) to identify both awarding and funding offices for procurement awards captured in the Federal Procurement Data System (FPDS).
All agencies are required to enter an awarding and funding office in FPDS per FAR 4.603. The change that you will see in FPDS beginning April 1, 2016, is to the format of these codes, per FAR 4.605, and perhaps the names of the offices, depending on your agency implementation. These new codes will also be included in the changes to the Procurement Instrument Identifier, or PIID, that must be in place by October 1, 2017.
To watch a short training video on this topic, please visit the Acquisition.gov website.