Oracle Error Codes

object “string”.”string” of type “string” does not exist or is invalid

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.

How to Solve :

Ensure the object is valid in the database, is visible to the user, and, if appropriate, is a valid object in all_repobject.