Director identification numbers now include designated partnership IDs and revised DIN forms take effect 9 July 2011. The Companies Director Identification Number (Third Amendment) Rules, 2011 (effective 9 July 2011) amend the Companies (Director Identification Number) Rules, 2006 by redefining Director Identification Number to include the Designated Partnership Identification Number (DPIN) issued under the Limited Liability Partnership Act, 2008, and by substituting revised Forms DIN-1 and DIN-4 for the earlier prescribed forms.