To import Structures from SAP IDocs for use with Talend Data Mapper. do the following:
In the Repository view, under Metadata, expand SAP Connections, right-click a connection and then, in the contextual menu, select Import Data Mapper IDoc Structures.
In the [Search SAP for IDoc types] wizard that opens, enter some search criteria to reduce the number of results returned or leave all fields blank to return all available IDocs, and then click Search.
Select the Structure or Structures you want to import, and then click Next.
In the Structure name field, enter a name for the folder into which you want to import the Structure, and then click Next and then Finish to complete the import process.
For more information on working with Talend Data Mapper, see Talend Data Mapper User Guide.