|in € millions||12/31/2017||12/31/2016|
|Other non-financial assets||710||704|
|Other non-financial assets||868||953|
|– advance payments||447||487|
|– other tax receivables||82||96|
|– deferred items||191||186|
|– sundry non-financial assets||148||184|
The non-current other non-financial assets relate to advance payments for royalties and licenses in the amount of €659 million (previous year: €664 million). Advance payments for royalties and licenses are generally written off if no recoupment is expected. The amount of these write-downs is based on management estimates of future sales volumes and price changes using historical data.