** WARNING 99463 ** The composite Poisson's ratio (v12) value ( composite mu12 value ) is lower than the fully aligned v12 value (fully aligned mu12 value). Check the material data and run the analysis again.
The fiber orientation prediction code has calculated the theoretical minimum Poisson's ratio (v12) value, if all fibers are aligned with the flow direction (<fully_aligned_mu12_value>), using the micro-mechanics model selected in the solver parameters. The composite (matrix+fibers) Poisson's ratio (v12) value specified in the mechanical properties of the currently selected material is less than this theoretical minimum value, which suggests that it is invalid.