Oracle Error Message
ORA-23308: object string.string does not exist or is invalid
Reason for the Error
The 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.
Solution
Ensure the object is valid in the database, is visible to the user, and, if appropriate, is a valid object in all_repobject.