mrp_mps_bottom_up/README.md

MPB Bottom-Up Replenishment (Two-Way MPS)

Overview

This module (mrp_mps_bottom_up) enhances the standard Odoo 19 Master Production Schedule (MPS) by introducing a "two-way" propagation of manual replenishment quantity changes.

In standard Odoo MPS, modifying the replenishment quantity of a top-level component (FG1) creates downward indirect demand for its sub-components (FG or WIP), but modifying a sub-component (FG) has no effect on its parent (FG1).

This module intercepts manual edits to the replenish_qty cell and automatically:

1. Traces Up (Bottom-Up): Calculates the equivalent base quantity required for any parent products and seamlessly updates their replenishment quantities in the same period without triggering infinite loops.
2. Drills Down (Top-Down): Calculates the equivalent quantity required for child components and explicitly pushes this demand down.

It fully supports sub-component scaling based on correct BOM ratios. It includes built-in compatibility with custom packaging quantities (e.g. from the mrp_packaging_qty module), accurately multiplying or dividing base units by packaging multipliers during the Drill Down operation.

Installation

Add the module to your custom addons directory and install it via the regular Odoo Apps menu. The module implicitly depends on the core mrp_mps enterprise module.

Usage

1. Open the Master Production Schedule view.
2. Ensure you have product hierarchies defined with BOMs (e.g. Product A requires 2x Product B).
3. Add both Product A and Product B to your MPS view.
4. If you artificially increase the Replenishment for the child Product B, you will see Product A automatically adjust to reflect the scaled parent demand.
5. If you increase the Replenishment for a middle component, you will observe the quantity propagate up to parents AND down to children simultaneously.

Dependencies

• mrp_mps (Core Odoo Enterprise module)
• Compatible with mrp_packaging_qty (Custom Module)

License

Licensed under LGPL-3.0.