Odoo Manufacturing & Inventory
MRP Smart Picking Quantity Adjust
Instantly recalculate every component quantity on a manufacturing-linked stock transfer the moment your production plan changes, no manual line-by-line editing, no spreadsheet math.
MRP & Inventory
Manufacturing
Picking
Bill of Materials
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Partial Production Is a Calculation Nightmare
Your Bill of Materials defines component quantities for a full production run, say, 100 chairs, each needing 4 legs, 1 seat, and 1 backrest. But real-world manufacturing rarely happens in perfect full batches. A customer needs an urgent partial delivery. A component is short. A machine needs to be shared. Your team decides to produce 30 chairs today.
Now someone has to sit down and manually calculate: 30 × 4 = 120 legs, 30 × 1 = 30 seats, 30 × 1 = 30 backrests. Then open the picking, edit each line one by one, verify the numbers, and validate. Every time the target quantity changes, the whole exercise starts again.
Multiply this across dozens of SKUs, multiple components per product, and unit conversions (kilograms to grams, rolls to metres) and you have a daily source of manual errors, production delays, and material waste that grows with your business.
Partial production runs are the rule, not the exception, but Odoo’s default picking workflow treats every run like a full batch. This module closes that gap.
This module adds an Adjust Component Quantities button to any picking transfer linked to a Manufacturing Order. When clicked, it opens a simple wizard where you enter the quantity you actually want to produce. The module then
Auto-Calculates All Components
Reads your Bill of Materials and computes every component quantity proportional to the target production quantity you enter.
Supports Partial Production
Works for any fraction of your original Manufacturing Order quantity, produce 30 out of 100, or 7 out of 50.
Preserves the Manufacturing Order
Set platform commission rates at a global level or per seller. Seller bills and payment requests are tracked directly in Odoo Invoicing.
Handles Unit Conversions
Converts between compatible units of measure seamlessly, kg to g, rolls to metres, litres to ml.
No Backorders Created
Adjusting quantities doesn't split orders or generate automatic backorders, you stay in control of scheduling.
Eliminates Manual Errors
Replaces spreadsheet calculations and hand-edited picking lines with a single, accurate, system-driven update.
Say your Manufacturing Order is for 100 chairs. Each chair's Bill of Materials requires
| Component | Unit | BoM per Chair | Original (100 chairs) | Adjusted (30 chairs) |
|---|---|---|---|---|
| Chair Legs | pcs | 4 | 400 | 120 |
| Seat Panel | pcs | 1 | 100 | 30 |
| Backrest | pcs | 1 | 100 | 30 |
| Upholstery Foam | kg | 0.8 | 80 | 24 |
| Assembly Bolts | pcs | 12 | 1,200 | 360 |
Without this module, someone recalculates and edits all five lines by hand, with opportunity for error at every step. With the module, you type 30, click Confirm, and every line updates instantly and correctly.
Step by Step
Open the Picking Transfer
Go to Inventory → Operations → Transfers and open a picking that is linked to a Manufacturing Order. These are the component transfer pickings created when you confirm an MO.
Click "Adjust Component Quantities"
A new button appears on the picking form. Click it to open the adjustment wizard. No configuration required, it reads your BoM automatically.
Enter Your Target Production Quantity
In the wizard, enter the number of finished units you want to produce in this batch, e.g., 30 (out of the original 100 on the MO).
Click Confirm
The system calculates the ratio (30/100 = 0.3), multiplies every BoM component quantity by that ratio, and applies rounding to avoid material shortages.
Review the Updated Lines
All component quantities in the picking are updated automatically. The Manufacturing Order itself is untouched. Validate the picking and proceed with production.
| Your Action | System Response |
|---|---|
| Enter target quantity | Module calculates ratio: target ÷ original MO quantity |
| Bill of Materials recalculated | Component quantities are updated proportionally |
| Transfer updated | Done quantities on the picking are adjusted |
| MO preserved | Original Manufacturing Order demand remains at 100 — no change |
1 of 7
Discrete manufacturers
Doing batch or job-shop production where each run is sized to order, customer requirement, or available capacity, never always 100% of the MO.
2 of 7
Food and beverage producers
Scaling recipes up and down based on daily demand, with multiple ingredients measured in grams, kg, and litres that must convert correctly.
3 of 7
Pharma and cosmetics manufacturers
Producing partial batches for quality testing, pilot runs, or regulatory samples before committing to full production.
4 of 7
Furniture and assembly businesses
filling rush orders by producing a subset of a larger scheduled run without disrupting the full order in Odoo.
5 of 7
Engineering and MRO shops
building assemblies to demand, where component quantities vary widely and manual calculation is both slow and error-prone.
6 of 7
Textile and apparel manufacturers
Cutting fabric in partial rolls with complex UoM conversions (metres to running yards, rolls to sheets).
7 of 7
Production planners and warehouse managers
Who need to issue exact raw material quantities to the shop floor, not the full MO amount, without risking waste or shortage.
The Real-World Impact
| Scenario | Without This Module | With This Module |
|---|---|---|
| Partial batch decision | Manual — open spreadsheet, calculate | Instant — type target qty, click Confirm |
| 5-component product, 30% run | 5 manual edits , each prone to error | 1 wizard entry, all lines updated |
| UoM conversion (kg → g) | Manual conversion on top of ratio calculation | Automatic — module handles conversion |
| MO integrity | Risk of accidentally editing MO demand | MO untouched — picking only |
| Rounding and shortages | Depends on who does the maths — inconsistent | Ceiling rounding applied consistently |
| Backorder management | Can trigger unintended backorders | No automatic backorders created |
The module is designed to be safe and non-destructive. Here is what it does and does not do
BoM Components Only
Only picking lines that match Bill of Materials (BoM) components are updated. Unrelated stock move lines remain untouched, ensuring that only the required manufacturing materials are adjusted.
Completed Transfers Are Protected
Lines that are already in Done or Cancelled status are automatically skipped, preventing completed transfers from being overwritten.
Automatic Quantity Rounding
Required quantities are rounded up using ceiling rounding to ensure that the issued quantity is never less than the amount required for production.
Manufacturing Order Required
The picking must originate from a Manufacturing Order (MO). Standalone inventory transfers that are not connected to MRP are not supported.
BoM Configuration Required
The product must have a Bill of Materials (BoM) configured. Without a valid BoM, the wizard cannot calculate the required component quantities.
Original MO Demand Remains Unchanged
The original Manufacturing Order demand is never modified. The adjustment affects only the physical stock transfer and does not alter the order record.
No Manufacturing Order linked
Make sure you are opening a picking created from an MO — go to Manufacturing → Manufacturing Orders and open transfers from there rather than creating manual pickings.
No BoM found for product
Navigate to Manufacturing → Products → Bills of Materials and confirm an active BoM exists for the finished product.
No matching component lines updated
Verify the picking originates from the MO. Pickings created manually (not from an MO) won't have matching BoM lines.
Lines not changing after confirmation
The line may already be in Done or Cancelled state. Only lines in a ready or todo state are eligible for adjustment.
Quantity looks wrong after conversion
Check that the unit of measure on the picking line and the BoM are configured within the same UoM category in Odoo's settings.
Compatibility
- Odoo.sh
- On-Premise
- Enterprise Edition
Dependencies
Discuss
Inventory
- No third-party libraries
- No external APIs
- no additional SaaS subscriptions
Installation
- Copy the module folder to your custom addons directory
- Enable Developer Mode in Odoo settings.
- update the apps list, search for mrp_picking_quantity_adjust, and install.
The Adjust Component Quantities button will appear immediately on MO-linked pickings — no additional configuration required.
Building this functionality from scratch in Odoo requires deep knowledge of the mrp.production and stock.move models, how Odoo resolves BoM components for a specific production quantity, UoM conversion logic, and how to write a clean wizard without breaking the picking workflow. This is typically 2–4 days of development work for an experienced Odoo developer.
At $18.01 for a lean, proven module with 108 lines of clean code, the ROI is immediate, even if you only use it to fix one bad partial production run that caused material waste.
The module is maintained by Ahex Technologies, a dedicated Odoo Apps publisher known for focused, lightweight modules that do exactly one thing well and are easy to audit or extend.
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Ready to Eliminate Partial Production Headaches?
Get MRP Smart Picking Quantity Adjust for Odoo and let your system do the math—every partial run, every component, every time.
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Related to Implementation
Yes. The module is compatible with both Odoo Community and Enterprise versions running Odoo 19. It depends only on the standard Inventory and Manufacturing modules available in both editions.
No. The module adjusts the picking quantities without creating any automatic backorders. The remaining quantity stays on the original Manufacturing Order and can be handled in a future transfer at your discretion.
The module handles unit conversions automatically, as long as the units belong to the same UoM category in Odoo (e.g., mass category: kg, g, lb). Cross-category conversions are not possible by design in Odoo’s UoM framework.
No — this is by design. The MO always reflects the total ordered quantity. The module only updates the component quantities on the active picking transfer, leaving the MO untouched. This means you can produce in multiple partial runs against the same MO without confusion.
The module adjusts the direct component lines of the picking based on the primary BoM. Sub-assemblies managed as separate MOs would require their own adjustments using the same workflow.
The module calculates a ratio based on your input relative to the MO quantity. Entering a target greater than the MO quantity would result in a ratio above 1.0, scaling quantities up. However, it is recommended to use this for partial (downward) adjustments and use Odoo’s standard MO qty edit for upward changes.
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Looking for a Solution? Let's Talk
- sales@ahex.co.in
- (India) +91 - 8885564224
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