Purchase Stock Product Replenish Default Supplier

This module improves the Replenish wizard in Odoo's Inventory and Purchase areas. Normally, when you click Replenish on a product that has an orderpoint (reordering rule), Odoo only fills in the supplier if one was explicitly configured on that orderpoint. Since the supplier field on an orderpoint is optional and hidden by default, the wizard often opens with no supplier at all.

With this module, the wizard looks at the product's vendor list (the suppliers recorded on the product) and automatically selects the first one as the default supplier. It also checks that any supplier already proposed is actually a valid vendor for that product; if not, it clears it and falls back to the product's main supplier.

• Applies to the product.replenish wizard, the same screen used when you replenish a product from the product form or from reordering rules.
• No new menus, buttons or reports are added.
• No new fields are created; it only changes the default value shown when the wizard opens.
• You can still change the supplier manually before confirming the replenishment.

This saves time and reduces mistakes when creating purchase orders from replenishment, because the correct vendor is proposed automatically.