This table is read by the upgrade process. Without it, the upgrade will not know the underlying RCU schemas. See, if it is present in any other environments. If yes, we can figure out to create a copy here. Regards, Vivek

Can you please check the output of the below query: select * from system.schema_version_registry where comp_id= 'IAU'; schema_version_registry is the table where Oracle Fusion Middleware maintains RCU schema information. If records are missing from the table, then it causes issues while upgrading.