One more thing.... @Fabien, As always, you should design a generic method in accounting for example to wrapp always your logic, IMHO if you do that at least in terms of partners and products (to main object in fiscal recording data) AND rebuild everything in terms of this accounting API you will avoid A LOT of regressions..... Because solve problems in this method will help us (Localization makers and mantainers) give quick and fast solutions for our laws. What do you think? Regards. 2013/3/26 Nhomar Hernández