Excise non-recovery: directed non-payment of duty on animal-feed grade di-calcium phosphate for specified past period. A central government notification directs that excise duty on Di Calcium Phosphate (animal feed grade) of rock phosphate origin, not levied due to a prevailing practice during 1 February 2008 to 1 February 2014, shall not be required to be paid; the direction is issued under the government's statutory administrative power to relieve past duty liabilities where such a practice existed.