Internal Data Mapping - Source And Target Mapping

The most typical data mapping involves one to one relation at the level of source and target tables and source and target fields from each one of the related tables. In the external to internal data mapping you have the possibility to map one source table into several target tables, which is the case of the table that holds the source master list which feeds data to the target Reservations, Accounts, Travel Documents, etc. The top of the form shows you the several source and targets table mapped as well as their respective source and target field associations.