Transfer Attributes transfers UV, color per vertex (CPV), and vertex position information between meshes that have differing topologies (that is, the meshes have different shapes, and the vertices and edges are different).
Transfer Attributes transfers vertex data by sampling the vertex information on the source mesh and then transferring the information to the specified target mesh, based on a comparison that is spatially based. The target mesh gets modified as a result.
Sample space
The Local setting can be used when you want to compare the source and target meshes side by side. A local space transfer works correctly only when the objects have identical transformation values. You can reset transformation for your source and target meshes using Modify > Freeze Transformations.
The UV setting transfers attributes based on UV mapping correlations instead of a spatial correlation within the 3D scene. It allows attributes to be transferred between objects that have different proportions and scales, or when they are separated spatially.
The source and target meshes must have existing UVs for the UV sample space option to work. When the meshes contain multiple UV sets the currently active UV set is used by default. Otherwise, you can specify which UV sets to correlate for the attribute transfer by typing the name of each UV set in the Sampling options section of the transferAttributes node in the Attribute Editor.
The Component setting transfers attributes by directly matching attributes component by component. Objects must have identical topologies when using this setting. That is, the number of vertices, faces, edges, and their interrelationships must be identical. Objects can be spatially separated when using this option.