811: fx-2 change to use exists() as a function.
fx-2 requires changing to follow the specification guidelines to use exists() as a function. The rule today is: ” fx-2 (Mandatory) Context: ExchangeRate (complex type) [exists(forwardPoints)] spotRate must exist. ” The rule should be: ” fx-2 (Mandatory) Context: ExchangeRate (complex type) [exists(forwardPoints)] exists(spotRate) “