[FIX] l10n_latam_invoice_document: only trigger constraint when partner_id is set

Before, when importing twice the same invoice, or even with the more
theoretical possibility of having the same number for different partners,
the constraint would be triggered, giving unnecessary problems when
importing vendor bills with an uncertain partner_id.

If we check the logic followed in the regular accounting on the ref field,
it only triggers when a partner is set, so we can follow the same logic here.

closes odoo/odoo#68389

X-original-commit: f43ae2375a6550e0d03c69fb8389ec13b40307ab
Signed-off-by: William André (wan) <wan@odoo.com>
Signed-off-by: Josse Colpaert <jco@openerp.com>

0 files changed, 0 insertions, 0 deletions