Documentation of statistics: Indices of Average Earnings for the Private Sector (Discontinued)
For example would reporting of a low and wrong value for irregular payments result in too high calculation of wage developments, as the irregular payments could not be separated from the wage component.
https://www.dst.dk/en/Statistik/dokumentation/documentationofstatistics/indices-of-average-earnings-for-the-private-sector--discontinued-
Documentation of statistics