The update improves how Odoo handles duplicate invoice number conflicts by turning low-level database errors into clear user-facing messages. This helps users understand and resolve the issue instead of seeing a technical crash when posting invoices or using sequences.

Task: https://www.odoo.com/web?#id=13101&view_type=form&model=project.task&menu_id=3942&action=327
Pad: https://pad.odoo.com/p/r.qn2720iJzS0eIeb3