AFIP currency rates goes up to 6 digits. When invoicing exportation of services, AFIP requires to invoice on the exactly same rate. Without this change it was not possible for some currencies with 6 digits as CHF one. The change takes effect without needing of updating module closes odoo/odoo#63156 X-original-commit: 150493ca3fff8b44cf890205990dbd72cebdcb36 Signed-off-by: Josse Colpaert <jco@openerp.com>