In order to ensure full comparability of the harmonised indices, uniform conditions are needed for the application of the ECOICOP for the purpose of the HICP and the HICP-CT; for the breakdown of the flash estimate of the HICP provided by Member States whose currency is the euro; for the breakdowns of the OOH price index and of the HPI; for the quality of weights of the harmonised indices; for improved methods based on voluntary pilot studies; for the appropriate methodology; for detailed rules on the rescaling of the harmonised indices; for the data and metadata exchange standards; for the revision of the harmonised indices and their sub-indices; and for technical quality assurance requirements regarding the content of annual standard quality reports, the deadline for providing the reports to the Commission (Eurostat) and the structure of the inventories and the deadline for providing the inventories to the Commission (Eurostat).
Chun go n-áiritheofar go mbeidh na hinnéacsanna comhchuibhithe go hiomlán inchomparáideach, is gá coinníollacha aonfhoirmeacha do chur i bhfeidhm ECOIOCP ar mhaithe le ICPT agus ICPT-CS;, don mhiondealú ar an tobmheastachán ar ICPT a sholáthraíonn Ballstáit a bhfuil an euro mar airgeadra acu; agus do mhiondealuithe innéacs praghsanna TÚÁ agus IPT; do cháilíocht ualaí na n-innéacsanna comhchuibhithe; do mhodhanna feabhsaithe bunaithe ar threoirstaidéir dheonacha; don mhodheolaíocht iomchuí; do rialacha mionsonraithe maidir le hathscálú na n-innéacsanna comhchuibhithe; do na caighdeáin malartaithe sonraí agus meiteashonraí; d'athbhreithniú na n-innéacsanna comhchuibhithe agus a bhfo-innéacsanna; agus do cheanglais i leith dearbhú cáilíochta teicniúil a bhaineann le hábhar tuarascálacha bliantúla caighdeánacha ar cháilíocht, an sprioc do sholáthar tuarascálacha don Choimisiún (Eurostat) agus struchtúr na bhfardal agus an sprioc do sholáthar na bhfardal don Choimisiún (Eurostat).