I need my production Odoo 14 instance moved to the freshly-released Odoo 18 within the next 24 hours. The focus is the POS and Purchase apps, and the migration must carry across every detail of my Sales Management and Inventory Tracking workflows. The database currently runs several custom modules, so you’ll have to refactor or upgrade that code base as part of the job—no functionality loss is acceptable. Once everything is on Odoo 18 I should be able to open the POS, ring a sale, update stock, create a purchase order, and reconcile it against incoming inventory without errors or manual tweaks. Deliverables I will sign off on: • Full data and module migration to Odoo 18, validated on a staging instance • Fixes or rewrites for any custom modules that break after upgrade • End-to-end test demonstrating POS sales, stock deduction, and purchase receipt flows • One backup/rollback plan in case we hit unexpected issues in production SSH access to both servers and a fresh Odoo 18 environment are ready to go. If you are confident you can complete the switch-over, testing, and hand-off in a single day, let’s start immediately.