Oracle Message ORA-13751 - SQL Tuning Set string does not exist for owner string or user string does not have permission to access the SQL Tuning Set.

ERRORSQL Tuning Set string does not exist for owner string or user string does not have permission to access the SQL Tuning Set.
CAUSEThe user attempted to access a SQL Tuning Set that does not exist or the user does have permission to access the SQL Tuning Set
ACTIONCheck the existence of the SQL Tuning Set or adjust the users privileges and retry the operation.