This document discusses the order and rank conditions for identification of equations in a simultaneous equation model. The order condition states that for an equation to be identified, the number of excluded variables must be greater than or equal to the number of endogenous variables minus one. The rank condition requires that it is possible to construct a non-zero determinant of order G-1 (where G is the number of endogenous variables) from the coefficients of excluded variables. An example simultaneous equation model is provided to demonstrate checking if the order and rank conditions are satisfied for each equation. The first two equations satisfy both conditions and are identified, while the third equation fails the rank condition and is unidentified.