Oracle Solution for Error ora-24069

ORA-24069: cannot downgrade queue table string while it is being upgraded

What triggered the Error:

attempt was made to downgrade a queue table, but a previous command to upgrade the queue table has not yet completed successfully.

What should we do to fix it:

mplete the upragde of the queue table by re-executing the DBMS_AQADM.MIGRATE_QUEUE_TABLE procedure. Then, downgrade the queue table.