Oracle Message ORA-23395 - object string.string of type string does not exist or is invalid

ERRORobject string.string of type string does not exist or is invalid
CAUSEThe given name was null or misspelled, the given type was wrong, the object does not exist as a valid database object, or the object does not exist as a replicated object with the appropriate status.
ACTIONEnsure the object is valid in the database, is visible to the user, and, if appropriate, is a valid object in all_repobject.