ANSYS FSI

hi,

I am doing FSI analysis in Ansys.In that analysis I am using CFX and Transient Structural.In transient Stuructural,i need to apply a point load.so I created a hard point.But while doing meshing with Multizone meshing it shows the following error: "Error:Multizone found free block in swept body".So what can I do?Can anybody help me in this context?

Thank you