REVENUE MEMORANDUM CIRCULAR NO. 86-2007 issued on December 14, 2007 notifies the loss of triplicate copy from one (1) set of a used BIR Form No. 0422- Mission Order (MO) with Serial No. MSO200100007886. 

      Because of the loss of said copy, which was reported by Ms. Dina P. Villamil of Revenue Region No. 1-Calasiao, Pangasinan, the entire MO set bearing the said serial number has been cancelled and all official transactions involving the use thereof are considered as invalid.