Namespaces for BI Objects 
Use
The following namespaces are generally available for BI objects:
SAP-delivery (Business Content) namespace:
· Objects beginning with 0
· Generated objects in the DDIC beginning with /BI0/
InfoCube 0SALES, fact table /BI0/FSALES
Customer namespace:
· Objects beginning with A-Z
· Generated objects in the DDIC beginning with /BIC/
InfoCube SALES, fact table /BIC/FSALES
Partner-specific namespace and customer-specific namespace:
· Object begins with /XYZ/ (example)
Special SAP namespaces for generated objects:
· The prefixes 1, 2, 3, 4, 6, 7, 8 are required in BW for DataSources and InfoSources in special SAP applications.
· The prefix 9A is required for the SAP APO application.
When you create your own objects, therefore, give them technical names that start with a letter. The maximum permitted length for a name varies from object to object. Typically, 9 to 11 letters can be used.
You can transfer from the Business Content version any Business Content objects that start with 0 and modify them to meet your requirements. If you change an InfoObject in the SAP namespace, your modified InfoObject is not overwritten immediately when you install a new release, and your changes remain in place for the time being.
You also
have the option of enhancing the SAP Business Content. There is a partner
namespace and a customer namespace available for you to do this. You have to
request these namespaces specially. Once you have prepared the partner
namespace and the customer namespace (for example, /XYZ/) you are able to
create BI objects that start with the prefix /XYZ/. You use a forward slash
(/) to avoid overlaps with SAP Business Content and customer-specific objects.
For more information on this, see 
Using Namespace for
Developing BW Objects.
See also:
Generating the Master
Data Export DataSource
Naming Conventions for Background Jobs