Delivery carrier max quantity

This module adds a quantity limit to delivery carriers. On the delivery carrier form (the same screen where you configure shipping methods), a new numeric field appears just before the tag requirement field, where you can enter the maximum total quantity the carrier accepts.

When a sales order, cart or quotation is being processed, Odoo checks the total quantity of all order lines against that limit. If the order quantity is greater than the carrier's maximum, the carrier is no longer offered as a shipping option. If the limit is left empty or set to zero, the carrier stays available with no quantity restriction.

The check is combined with the carrier's existing availability rules, so a carrier must satisfy both its normal conditions and the quantity limit to be selectable. The module only touches the delivery carrier configuration and the carrier selection logic; it does not create new menus or reports.