Is there an upper limit to the number of dictionaries in a drawing?

By Gopinath Taget

There is no hard-coded limit to the number of dictionaries you can have in an AcDbDatabase, although it is recommended that they be nested. Inside the named objects dictionary, you should have a top level dictionary using your company’s developer ID (typically four characters) as a prefix in order to prevent conflicts with names. Underneath this top-level dictionary, it is recommended that application-specific dictionaries are maintained and that they be nested, if necessary.