The condition on computation of `l10n_ch_isr_number_spaced` was not in line anymore with `l10n_ch_isr_number` computation. With fixes on the ISR number the use of `l10n_ch_isr_postal` is rightly not mandatory anymore. This lead to an empty field, visible on the ISR report. closes odoo/odoo#67058 X-original-commit: fdbfb332b528ba8b35d7529eecd610086465aff8 Signed-off-by: Josse Colpaert <jco@openerp.com>