The boundary layers associated with face. id, face are conflicting and/or will overla
 

I want to generate mesh in a face. but the gambit alway hint me the error "The boundary layers associated with face. 316, face are conflicting and/or will overlap. Please adjust the boundary layer specifications and try meshing again."

Can you enlarge your picture in the area of face.316 to see where the BL is lying on
PS: if you use the label [ANSYS Meshing] instead of [Gambit] you won't target the godd persons > I never read threads with [ANSYS...] ;