Creating Local Providers 
If you want to use data, which is not available on the BW system, in a CompositeProvider, you can upload this data manually to Workspace Designer. To do this, create your own local providers that get data from files, BEx queries or DataSources.
Select a type of source and choose Start.
Proceed as described below for the relevant source type:
Choose Upload Data. An analytic index is created and filled. You can now use the data as a local provider in Workspace Designer.