Generating the Master Data Export DataSource 
Generating the Master Data Export DataSource
Use
The export DataSource is needed to transfer data from a source BW to a target BW.
You can generate an export DataSource for master data, and thus for individual InfoObjects. By doing this all the Metadata is created that is required to extract master data from an InfoObject (for example, all attributes and hierarchies that have been created for this InfoObject).
Prerequisites
The source BW must be created and actively saved in the target BW as
BW source system-defined. The steps to be carried out correspond to those for the automatic creation of an R/3 source system.The data content of the date target is activated.
Functions
You can use the selected DataSource as a DataSource for another system. The relevant export DataSource is not displayed in the InfoSource tree of the source BW.
The Metadata of an export DataSource are generated as they exist in the source BW. This also includes the procedure for external systems.
Activities
The technical name of the export DataSource is called
8******M. for attributes (M stands for 'master data')
8******T for texts.
8******H for hierarchies.
(The asterisks (*) stand for the source InfoObject.)
Therefore, when you create an InfoObject or a master data InfoSource in the source BW, please make sure that the length of the technical name of each object is no longer than 28 characters.
See also:
Restrictions Loading Metadata