Data Transfer artefacts in Blender 2.79 part of my loop, which I am trying to solder with a mesh is displayed incorrectly.

and, if you move the mesh with the DataTransfer along the surface of another mesh, then the loop becomes incorrect in other places.

Thanks for your help
I found the answer! The fact is that there is not enough geometry in the main mesh. if you add horizontal loops, then the mapping becomes correct.