As an Odoo developer, the replenishment group is a magical model; before Odoo 14, the replenishment group could effectively link sales and outbound delivery more closely.
After optimization by experts, odoo14 more closely associates replenishment groups with production manufacturing through the field mrp_production_ids on the original basis; at this point, sales orders and production orders can be directly linked.
If you have time, it is recommended that developers check out the official code.

