This module ensures that only one VAT tax can be selected on a salle order line. It uses and complements the module account_tax_one_vat.
auto_awesome What this module does
AI-generated from the code · Odoo 18.0Limits sales order lines to a single VAT tax. When more than one VAT tax is selected on a line, Odoo blocks saving and shows a warning.
This module adds a control on sales order lines so that only one VAT tax can be chosen per line. It works together with the account_tax_one_vat module, which provides the shared rule, and applies it to the Taxes field of each sales order line.
- On a sales order line, if you select more than one tax that is a VAT tax, Odoo will not let you save the line and will show a validation message.
- The check runs automatically whenever the Taxes field is changed, so you get immediate feedback while editing the order.
- The rule is enforced both when you change the field on screen and when the record is saved, so it cannot be bypassed by importing or editing data another way.
- It only concerns VAT taxes; other kinds of taxes are not restricted by this module.
The module touches the sales order line model (sale.order.line) and relies on the tax field (tax_id). It does not add menus, reports, or scheduled actions. No other business behaviour, such as tax computation or invoice creation, is changed.
Depends on
Models and fields (1)
- sale.order.line · new model
Text generated by AI (DeepSeek) from reading the Odoo 18.0 code on GitHub; it may contain mistakes, so check the code before deciding. View the code on GitHub
Availability by version
Reviewed: 2026-11-03Confirmation status: 2 confirmed, 7 with no information of 9 versions.
Sources · Odoo 18.0
Confirmed on 2026-11-03 in branch 18.0 of OCA/account-invoicing.
terminal Installation and usage
No verified informationInstallation instructions, the distribution package, dependencies and configuration steps are not shown because they have not yet been verified in the module documentation for any version.
Data imported from GitHub: this sheet reflects the latest catalog review, not a live lookup. Always check the module documentation and staging before installing in production.