REVENUE MEMORANDUM CIRCULAR NO. 12-2012 issued on March 27, 2012 circularizes the full text of the Cooperative Development Authority’s (CDA) memorandum to all their Regional Directors instructing them to refrain from issuing certificates of registration to cooperatives not specifically identified under Republic Act No. 9520, such as labor contracting, professional, construction, mining and other cooperatives similarly created, and to conduct inspection/examination and/or investigation to verify complaints that the said cooperatives were used as tax shield.