Create the output structure
Procedure
- In the Mapping perspective, in the Data Mapper view, expand the Hierarchical Mapper node, right-click Structures, click New and then click Structure.
 - In the New Structure dialog box that opens, select Create a new structure where you manually enter elements, and then click Next.
 - Name the structure multiple_record_outut, and then click Next.
 - Select the Flat Files (including csv) representation, and then click Finish.