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Discount Restriction

by
Odoo
v 18.0 Third Party 3
Download for v 18.0 Deploy on Odoo.sh
Availability
Odoo Online
Odoo.sh
On Premise
Odoo Apps Dependencies • Inventory (stock)
• Invoicing (account)
• Purchase (purchase)
• Sales (sale_management)
• Discuss (mail)
Lines of code 160
Technical Name discount_restriction
LicenseLGPL-3
Websitehttps://www.developerspro.co.uk
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Availability
Odoo Online
Odoo.sh
On Premise
Odoo Apps Dependencies • Inventory (stock)
• Invoicing (account)
• Purchase (purchase)
• Sales (sale_management)
• Discuss (mail)
Lines of code 160
Technical Name discount_restriction
LicenseLGPL-3
Websitehttps://www.developerspro.co.uk
Developers Pro Logo

Discount Restriction

Cap the maximum discount percent selected users can apply on selected products across Sales Orders, Purchase Orders and Invoices. Configured once at the company level — enforced automatically on every order line, every time.

Sales Orders Purchase Orders Customer & Vendor Invoices Per Company

Overview

What This Module Does

Stop margin leakage at the source. Pick the products you want to protect, the users who need a ceiling, and the maximum discount percent — the module then validates every Sales, Purchase and Invoice line and blocks any save that exceeds the limit with a clear error message. Zero training, zero workflow changes for your team.

🔒
Hard Discount Cap
Define one maximum discount percent per company — any line that exceeds it is rejected with a translatable error.
👥
Targeted Users
Restriction applies only to the users you list — managers and senior staff continue to operate without any limit.
📦
Selected Products
Pick the exact products to protect — everything outside the list keeps its existing discount behavior, untouched.

Coverage

Where The Restriction Applies

One configuration, three documents. The discount cap is enforced everywhere a price-line discount can be set in standard Odoo.

Sales Order Lines
Validated on every quotation and confirmed sales order line — the discount column never sneaks past the cap.
Purchase Order Lines
Buyers can negotiate — but never record a vendor discount above the policy threshold on a restricted product.
Customer Invoice Lines
Manual invoices and credit notes are checked the same way — cap is consistent with sales orders.
Vendor Bill Lines
Direct vendor bills also pass through the validator — no document type is left as a back door.
Per-Company Policy
Each company in a multi-company database keeps its own product list, user list and percentage cap.
Clear Error Message
User, product and current vs. allowed percent are all named in the error — no guessing what failed.

Details

Key Features

Everything you need to protect your margins, nothing your team has to learn.

Single Settings Page
All four configuration fields live under Inventory → Configuration → Settings — nothing is buried.
Master Switch
A single boolean turns the entire policy on or off — useful for promotions, sales events, or quick rollback.
Float Percent Field
Set the cap with decimal precision — e.g. 7.5%, 12.25% — not just whole numbers.
Many2many Lists
Restricted products and restricted users are picked through standard Odoo Many2many widgets — familiar UX, no surprises.
Validation On Write
The cap is enforced when the line is saved — so the violation cannot survive into a confirmed document.
No Workflow Changes
Pure validation layer — existing sales, purchase and invoicing flows continue exactly as they were.
Translatable Errors
All error messages are wrapped in _( ) — ready for any installed Odoo language pack.
Lightweight Dependency
Depends only on the standard stock, sale_management, purchase and account apps.
No Custom UI Bloat
Only one settings view is added — no extra menus, buttons or tabs cluttering up your operational screens.

Guide

How To Use

From install to enforcement in three quick steps.

1. Open Settings
Go to Inventory → Configuration → Settings and locate the Discount Restriction section.
2. Configure The Policy
Tick Enable, pick the restricted products, the restricted users, and set the maximum discount percent — then save.
3. You're Protected
From the very next document, any listed user trying to push a listed product past the cap is stopped with an explanatory error.

Why It Matters

Highlights

Protect margins without micro-managing
No more spot-checking sales orders or auditing invoices for over-discounted lines. The system enforces the policy automatically — managers approve only the genuine exceptions, not the rule.
Surgical, not blanket
Only the users you list, only the products you list. Senior reps still have full freedom. Non-strategic SKUs keep their normal discount behavior. The rule applies exactly where you want it — and nowhere else.
Consistent across Sales, Purchase and Accounting
One policy, three modules. The same cap that protects your sales margin also stops mistaken purchase discounts and inconsistent invoice/credit-note adjustments — one source of truth, everywhere.
Multi-company friendly
The configuration is stored per res.company, so each branch or legal entity in a multi-company database manages its own restricted products, users and percentage cap independently.

Settings

Configuration Fields

Four fields. That's the entire setup — added under Inventory → Configuration → Settings.

Enable Discount Restriction
Boolean master switch. When off, all validation is skipped — useful for sales events, clearance windows or quick rollback.
Restricted Products
Many2many on product.product. Only these products are checked — everything else keeps its existing discount behavior.
Maximum Allowed Discount
Float percent. The hard ceiling enforced on every restricted line. Decimals are supported (e.g. 7.5%).
Restricted Users
Many2many on res.users. Only these users are subject to the cap — everyone else operates without restriction.

Preview

Screenshots

Discount Restriction Settings — Inventory → Configuration → Settings
Discount Restriction Settings Page
Validation In Action — Restricted User Blocked At The Cap
Discount Restriction Validation Error

What We Do

Our Odoo Services

End-to-end Odoo expertise — from initial setup to long-term support. We help businesses get the most out of their Odoo investment.

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Adapt existing Odoo modules to fit your workflows — custom fields, views, access rules, automated actions, and UI tweaks.
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Connect Odoo with payment gateways, shipping carriers, eCommerce platforms, CRMs, APIs, and other external systems.
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Training & Consulting
User training, admin workshops, best practice consulting, and strategic guidance to maximize your Odoo ROI.
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