CPXMI_SAMECOEFF_COL

The column has at least two coefficients that are almost equal. In many cases, this situation is due to round-off error in the data, and the coefficients should actually be equal. Almost equal coefficients can cause numerical trouble when rows (that is, constraints) or columns (that is, variables) are aggregated. Such coefficients can also cause numerical trouble when rows or columns are added in other situations, such as during linearization.