Out-of-Stock Handling & Safety Rules

Protect your customer experience and avoid backorders by managing sold-out bundle components.

In Combo Bundles > Settings > Inventory, merchants can specify automated safety rules to dictate how storefront bundle widgets respond when one or more bundled components sell out.

Shopify Admin / Combo Bundles
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Out of Stock Rule Preferences in App Settings

Setting fallback behaviors: Hide Widget vs Disable Button vs Variant Substitution.

📍 Screenshot Target:Shopify Admin > Apps > Combo Bundles > Settings > Inventory > Sold-out Rules

The 3 Automatic Safety Modes

  1. 1. Hide Bundle Widget:
    • Automatically conceals the entire bundle offer from the product display page as soon as any required component runs out of stock.
    • Recommended for curated combo kits (e.g. Shampoo + Conditioner) where both items are mandatory.
  2. 2. Disable Add to Cart Button:
    • Keeps the bundle widget visible for promotional awareness, but disables the CTA button and displays an informative banner: 'One or more bundle items currently out of stock'.
    • Prevents customer confusion while allowing buyers to browse individual available items.
  3. 3. Variant Substitution (Mix & Match):
    • For Box Builders and Offer Stacks with variant pickers, only sold-out options (e.g. Size Small) are grayed out with a 'Sold Out' label.
    • Customers can freely select other in-stock sizes, colors, or flavors to complete their bundle.
Shopify Admin / Combo Bundles
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Storefront Sold-Out Component State

Storefront view showing disabled sold-out variant chip and clear customer messaging.

📍 Screenshot Target:Online Storefront > Product Page with out-of-stock bundle component