Why is ase currency omitted from the FXSpot, FXOutright and FXSwap and included in FXOptions?
The ‘baseCurency’ element is used in FX Option instruments to indicate which of the two currencies is regarded as the base currency for this FX trade. In conjunction with the FXRate and its term field, the baseCcy indicates the market convention being used: American (‘base per term’ or ‘base per risk’) or European (‘term per base’ or ‘risk per base’). The ‘baseCcy’ must correspond to one of the two currencies involved in the trade.