Please note that the FpML website will be down for maintenance from 6-8pm, New York time, on December 7, 2023. For further information email info@fpml.org
C24 (http://www.c24.biz) provides Java binding for every version of FpML, currently up to 5.3. It’s fast and includes the validation rules too, I know a number of banks are using this in production. Good luck, -John-