You can specify mapping techniques and default behavior using the Property Mapper editorAdvanced tab.
The Property Mapper editor Advanced tab
The Property Mapper editorAdvanced tab (shown below) lets you configure advanced mapping techniques when you are building prototypes.
About enabling implicit mapping
The first advanced option, Map source properties to Endeca dimensions with the same name, enables implicit mapping.
Enabling default mapping
The default mapping option defines the default that Forge uses to handle source properties that have neither explicit nor implicit mappings. There are three possible settings.
About the default maximum length for source property values
The Default Maximum Length option defines the maximum source property value length allowed when creating mappings. Source properties that have values that exceed this length are not mapped, and a warning is issued by the Forge Logging system, if so configured.