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InfoObject Naming Conventions 
As is the case for other objects in BW, the customer namespace A-Z is also reserved for InfoObjects.
When you create an InfoObject, the name you give it has to begin with a letter. Business Content InfoObjects start with the number 0.
You can find additional information abour namespaces under Namespaces for BW Objects.
If you change an InfoObject that is in the SAP namespace, your changes are not overwritten immediately when you install a new release, and your changes remain in place.
Business Content InfoObjects are initially delivered
in the D version. An InfoObject is activated after you have installed
it from Business Content (see
Installing Business
Content). If you change the activated InfoObject, a new M
version is generated. When this M version is activated, it
overwrites the previous active version.

Keep in mind that when you are determining naming conventions for InfoObjects, the length of an InfoObject is restricted to 60 characters.Included here is the concatenated value if other characteristics are compounded to other InfoObjects. See also Tab Page: Compounding.