The present error is normally encountered during the Creation of Cylinder and Valves, if we are not assigning the correct face names to the faces of the respective Engine Part Surfaces.
The error message "**ERROR (Intake Valve 1): Valve head construction faces missing" may appear during Create Cylinder and Valves in Simcenter STAR-CCM+ In-Cylinder. This generally happens if CAD face naming does not follow the recommended best practice. To resolve this issue, you need to import the CAD model into Simcenter STAR-CCM+ 3D CAD. Then, in 3D CAD, rename the CAD faces in accordance to the standard best practice, as shown in the picture below.