Missing Multipack
The multipack attribute tells Google how many identical items are in a single product listing when you sell multi-packs. For example, if you sell a '6-pack of black socks' as a single product, multipack = 6. Google uses this to calculate the per-unit price and compare your listing fairly against single-item competitors. Without multipack, Google may display your 6-pack's total price next to a single-item competitor's price — making yours look 6x more expensive and hurting CTR.
Missing value [multipack]Impact: Missing multipack doesn't cause immediate disapproval but it creates pricing confusion. When you sell a pack of multiple identical items (like a 6-pack of socks or 12-pack of pens) without setting multipack, Google can't properly compare your per-unit price against single-item competitors. This causes your products to appear overpriced in comparison shopping, hurting CTR and conversion.
Root Causes
- 1Your feed template doesn't include multipack — it's not part of default templates and needs to be added for stores selling packs.
- 2You sell multi-packs but treat them as single products in your catalog — no structured data captures that the product contains multiple items.
- 3Your supplier catalog data includes pack quantity but you don't map it to Google's multipack attribute.
- 4Products are listed as multipacks in title ('6-pack', 'case of 12') but not captured as a structured attribute.
- 5Mixed single and multipack products in the same category — unclear which need multipack set.
Fix by Platform
- 1Add a Shopify metafield for multipack: Settings → Custom data → Products → Add definition. Namespace: 'google', Key: 'multipack', Type: Integer.
- 2Set the value on multipack products: product editor → Google metafields → multipack → enter the count (e.g., 6 for a 6-pack, 12 for a dozen).
- 3For variants representing different pack sizes (e.g., '6-pack', '12-pack' as variants of the same base product): use variant-level metafields so each variant has its own multipack value.
- 4In your feed app (Simprosys, AdNabu): map 'multipack' to google.multipack metafield. Leave it blank for single-item products — no need to set multipack = 1.
- 5For bulk assignment: export products with 'multi' or 'pack' in title, set multipack values based on the title, re-import.
{% if product.metafields.google.multipack %}
{{ product.metafields.google.multipack }}
{% endif %}When This Doesn't Apply
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Frequently Asked Questions
What's the difference between multipack and is_bundle?+
Multipack = multiple identical items sold together (e.g., 6 identical pairs of socks, 12 identical pens, 24 identical cans of soda). Is_bundle = different items sold as a themed set (e.g., gift basket with varied items, camera + lens kit, skincare routine with multiple products). Multipack has identical units; bundle has diverse contents. Use whichever accurately describes your product.
Should I set multipack = 1 for single-item products?+
No. Leave multipack blank or omit the attribute entirely for single-item products. Setting multipack = 1 isn't technically wrong but it's unnecessary and can be flagged as incorrect metadata. Google's default assumption is 'single item' when multipack is omitted.
How does multipack affect pricing display?+
When multipack is set, Google can calculate per-unit price and show comparative pricing: 'Pack of 6 for $30 ($5 each)'. This is especially important in comparison shopping — without multipack, a 6-pack at $30 might display as more expensive than a single at $7, even though your per-unit price ($5) is cheaper. Multipack preserves accurate pricing comparison and improves CTR.
Can I have multipack products that are also variants of other products?+
Yes. A product line can have variants with different pack sizes: single, 3-pack, 6-pack, 12-pack. Each variant has its own multipack value (multipack = 1 can be omitted for single, multipack = 3 for 3-pack, etc.). All variants share the same item_group_id and have different multipack + price + SKU values.