How do I submit a multipack to Merchant Center?

Definition: As of 17 October 2026, Google Merchant Center's multipack attribute records how many identical manufacturer-defined units a retailer combines for sale as one product. A manufacturer-defined unit can itself be a package containing several items.

Key facts

• Google's multipack documentation requires the attribute for retailer-created multipacks in free listings, and for Shopping ads targeting the countries it lists.
• Google's GTIN documentation assigns different product identifier rules to retailer-created and manufacturer-created multipacks.
• Google's unit pricing measure documentation defines unit_pricing_measure as the total quantity and unit of measurement making up the product.
• Google's bundle documentation uses is_bundle for a retailer-created package containing a main product and different, complementary products.

Which quantity belongs in multipack?

Google's minimum requirements count the manufacturer-defined units grouped by the retailer. Its example assigns 3 both to three individual pens and to three manufacturer packs containing twenty pens each.

For Shopping ads, the documented target countries are Australia, Brazil, Czechia, France, Germany, Italy, Japan, the Netherlands, Spain, Switzerland, the United Kingdom and the United States. The free-listings requirement applies whenever the retailer creates a multipack.

How is the value formatted?

Google's format specification defines multipack as a numeric field that cannot be repeated. Its text data source example uses 6 in the multipack column. The corresponding XML attribute is:

<g:multipack>6</g:multipack>

The same specification lists no Schema.org property for this attribute. Google states that products failing its minimum requirements are disapproved, with notification in Merchant Center.

Which product identifiers belong to the pack?

A Global Trade Item Number, submitted through gtin, identifies a product. Google's GTIN guidance for multipacks says that a retailer-created multipack uses the individual products' GTIN, manufacturer part number (mpn) and brand values.

For a manufacturer-created multipack, the corresponding values belong to the multipack itself. The same documentation instructs merchants to submit a GTIN only when certain it is correct, and to omit an uncertain value rather than invent one.

What if the manufacturer already packages the items together?

Google's multipack requirements say to omit multipack when selling a single manufacturer-packaged multipack. They direct merchants to unit_pricing_measure when supplying the number of units.

Google's unit pricing measure requirements call for the total amount and its unit. The supported count unit is ct; weight and volume units are also supported. The value therefore includes a measurement unit, whereas multipack contains a number.

Related terms

• Google Merchant Center
• Product identifiers
• How do I submit a retailer-created product bundle to Google?
• Does every product need a GTIN in Merchant Center?

FAQ

Does a set of different products use multipack?

Google's bundle guidance calls for is_bundle=yes when you create a package of different products containing a main product. Its example is a camera combined with a lens and bag.

What value applies when I combine two manufacturer packs of two shirts?

Google's T-shirt example uses multipack=2. Its description specifies two packs of two shirts, giving four shirts in total.

Sources

1. Google Merchant Center Help, "Multipack [multipack]", undated
2. Google Merchant Center Help, "GTIN [gtin]", undated
3. Google Merchant Center Help, "Unit pricing measure [unit_pricing_measure]", undated
4. Google Merchant Center Help, "Bundle [is_bundle]", undated

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