1) In Source System, go to SE11 and create your own view, or use the standard view. Then go to RSO2 to create datasource.
2) Specify the name of the datasource in the field of RSO2 and hit Create.
3) Give the Application component and description.
4) In View/Table field field specify the ZView name.
5) Then click Save.
6) It will take you to the extract structure screen.
7) If you want to hide/select any of the field you can do that here, otherwise press enter.
8) Change the package of the datasource and specify the transport request number to it.
9) Test the extractor in RSA3.
10) Replicate in BW and map that to InfoSource.