Learn how to review and define attribute mappings.
The mapping between the datasource and the target source is created automatically. To change mappings, select the connecting line and attach it to another connection point.
You can map only to an unassigned target connection point. If all target connection points are already assigned, unassign a connection point by deleting the mapping line that is currently linking to it. Select the mapping line and press the Delete key, or right-click and select Delete.