Mapping tables map source members to target members.
To open the On the Maps screen, from a list, you select a dimension to map. Because, in the target dimension list, FDM displays only valid values, you can be assured that you are mapping source members to valid target values.
Mapping tables for the Account dimension contain a column that controls sign conversion. This column, which is titled with a minus ( – ), provides an option that reverses the sign of the source account value.