Cause: PL/SQL cannot understand
something in an imported library unit. It uses some feature either too new or
too old for this version to understand it.
Action: Recompile the imported library
unit with this version of PL/SQL, to discover more precisely what feature is
not supported.

Relared Errors:
PLS-00960: RPCs
cannot use variables with schema level user-defined types in this
release
PLS-00970: The
class name of a method must match that of EXTERNAL NAME clause in the type
head
PLS-00989:
Cursor Variable in record, object, or collection is not supported by this
release
PLS-00990:
Index Tables of Cursor Variables are disallowed
PLS-00992:
Cursor Variables cannot be FETCH`ed from
PLS-00993:
Cursor Variables cannot be passed as RPC arguments or results
PLS-00994:
Cursor Variables cannot be declared as part of a package
PLS-00995:
unhandled exception # string
PLS-00996: out
of memory
PLS-00997: no
cursor return types allowed in this beta version