SAP Message RSDD454 - '&1': Index missing. 'Set Active' is only possible with transaction RSRV

Diagnosis While writing data to the aggregate, the system deleted the indexes forthe corresponding tables. These indexes have not yet been rebuilt. Toavoid performance issues, the system has set the aggregate to 'inactive'so that it cannot be used when executing queries. Procedure You can check and repair the indexes by using transaction RSRV and thetest Database Indices of an InfoCube and Its Aggregates. Thistest is located under All Elementary Tests -> Database.