Grocery retail lives and dies on checkout throughput and price accuracy, and this is exactly where a stock Odoo POS starts to strain. Native point_of_sale handles a clean barcode and a fixed unit price well, but a real supermarket lane deals with GS1 price-embedded scale labels (20/21 prefixes that carry weight or amount in the barcode), deli counters selling by the kilo, multi-buy shelf tags like "3 for 100", and thousands of SKUs whose prices must stay identical between the shelf edge and the till. Out of the box, Odoo cannot decode a weighed barcode into product plus quantity, cannot express mix-and-match promotions across a product family, and has no channel to push a price change out to electronic shelf labels. Cashiers end up keying weights by hand and the store leaks margin through pricing mismatches.

The POS Grocery & Supermarket Suite is an Odoo module set we build on top of point_of_sale to close that gap. At its core is a barcode-rule engine extending barcode.rule that parses embedded-weight and embedded-price GS1 formats, so a scanned scale label resolves to the right product.product, quantity, and line total in one beep without a keystroke. A pos.pricelist-aware promotion model (models.Model with @api.depends computes) evaluates multi-buy, mix-and-match, and threshold discounts server-side at order validation, so the receipt and the shelf tag always agree. PLU lookups for loose produce are backed by an indexed lookup table and surfaced in a fast keypad screen built with OWL components in the POS front end, keeping the cashier on the keyboard and off the mouse.

Technically, the suite ships as clean, upgrade-safe addons: each has its own __manifest__.py declaring dependencies on point_of_sale (and pos_hr for lane/cashier management), models under models/, XML/OWL views, ir.model.access.csv plus record rules so a store manager sees only their store's data, and QWeb receipt and end-of-day reports. Electronic shelf-label sync runs through a documented integration layer: an ir.cron automated action batches price and stock deltas and delivers them to your ESL gateway over its API, while the same JSON-RPC/XML-RPC surface lets head-office systems push pricelist updates in. Cash-drawer and lane management extend the session model so each register reconciles independently at close. Everything targets Odoo 17.0, 18.0, and 19.0, and we scope Community versus Enterprise honestly up front — several capabilities (like advanced barcode-driven inventory) behave differently on Community, and we tell you which before you commit.

Because this is a build-to-order product, you are not downloading a finished app from apps.odoo.com. After a short scoping call we confirm your Odoo version, edition, hardware (scanners, scales, ESL gateway, drawer/printer models), and the exact promotion and barcode rules your stores use. We then build the suite to that scope, deliver it on a staging instance for UAT, and only move to production once you have signed off. Typical delivery is 2–4 weeks from confirmed scope, and you receive the full source, documentation, and a support window after go-live.