Value mapping sets
A value mapping set controls the mapping of data from one object to another. The template for the generic value mapping set is located at /sitecore/templates/DataExchange/Framework/DataAccess/Mapping/ValueMappingSet
Configuration
A value mapping set does not have any settings of its own to configure. To associate a value mapping with a value mapping set, add the value mapping as a child of the set.
When to extend a value mapping set
The default value mapping set depends on the value mappings assigned to it in order to know what data to map.
You can implement custom value mapping sets when the mapping logic is too complex to be described through configuration, or when you want to reuse existing mapping logic.
You can use code to implement a custom value mapping set.