About enabling implicit mapping

The first advanced option, Map source properties to Endeca dimensions with the same name, enables implicit mapping.

When implicit mapping is enabled, any source property that has a name that is identical to an existing dimension is automatically mapped to that dimension. The like-named dimension, and any of its constituent dimension values, must already exist in your dimension hierarchy (in other words, you’ve already defined them using the Dimensions and Dimension Values editors).

Implicit mapping uses the Normal mapping mode where only those source property values that have a matching dimension value explicitly defined in the dimension hierarchy are mapped. Forge assigns the IDs for any matching dimension values to the Endeca records. Any source property values that do not have matching dimension values in the dimension hierarchy are ignored.