Sampat Kumar
Ansys Employee

Hi Nelson, 
** Please try to avoid posting multiple questions in a single forum thread, it will create confusion in answering the question properly**

For meshing- What type of setup or method have you used for meshing? As per the error, it looks like an issue related to the source and target surfaces. If you are trying to sweep mesh, then please make sure that you have only one source face and one target face. Please make sure that all other faces are mapable.