As a consequence of the method used when aggregating indirectly seasonally adjusted chained values, it is for the time being not possible to calculate these aggregates for the quarters of 1990. An error has been found in collective consumption expenditure of government for the third quarter of 2020. The error has no effect on GDP. Derivative sizes and change in inventory are also affected. Minor changes in the seasonal adjustment for 2018-2020 occur in the affected series.