** ERROR 313235 ** Multiple inlets or outlets are specified on the Channel (3D) with inlet node (xx).
For accuracy of the solution, the inlet and outlet nodes must be specified on the inlet and outlet face before meshing, so that the mesher can identify the inlet and outlet faces. This error arises when multiple inlet or outlet nodes have been specified on the same inlet or outlet face.
Delete the inlet or outlet nodes that are not needed or not required. Perhaps delete them all and re- specify only the one needed.