mpn: Definition

 
Use the mpn attribute to submit your product’s Manufacturer Part Number (MPN). MPNs are used to uniquely identify a specific product among all products from the same manufacturer. Users might search Google Shopping specifically for an MPN, so providing the MPN can help ensure that your product is shown in relevant situations.

An illustration showing product packaging with the MPN visible and highlighted

When to use

Required for all products without a manufacturer-assigned GTIN. Learn about the gtin attribute.

If the product doesn’t have a clearly associated mpn or is a custom-made product (e.g., art, custom t-shirts, novelty products, and handmade products), the attribute is optional.

Format

Follow these formatting guidelines to make sure we understand the data you're submitting. 

Type String (Alphanumeric, Unicode characters. Recommended: ASCII only)
Limits 1–70 characters
Repeated field No
Schema.org property (What’s this?) Product.mpn, Type: Text
 
File format Example entry
Text

GO12345OOGLE
XML feeds <g:mpn>GO12345OOGLE</g:mpn>
Content API v2 (JSON)

"mpn": "GO12345OOGLE"
Content API v2 (XML) <mpn>GO12345OOGLE</mpn>

Guidelines

Follow these guidelines to make sure you submit high-quality data for your products and get the best performance from your ads.

Minimum requirements

These are the requirements you'll need to meet to show ads for your product. If you don't follow these requirements, we'll disapprove your product and let you know in the Diagnostics page of your Merchant Center account. 

  • Submit any other relevant unique product identifiers. You might be required to submit the brand and gtin attribute. When you submit product identifiers, we can better understand what you're selling. When we understand what you're selling, we can help connect users to your ads and make those ads richer. Learn more about product identifier attributes 
  • Use the MPN assigned by the manufacturer. Unless you’re the manufacturer, don’t use a value that you’ve created.
  • Distinguish between variants.
    • Use the correct MPN for each product. Typically, each variant of a product (different colors or sizes) has its own MPN, so make sure to submit the correct value. A key exception is different sizes of apparel products, where all sizes often have the same MPN.

Additional guidelines

Review each section closely to determine if the requirements apply to your country or product. If you don't follow requirements that apply to you, we'll disapprove your product and let you know in the Diagnostics page of your Merchant Center account.

Compatible and refurbished third party products
Bundles
  • Use the MPN of the bundle, not the individual products if the manufacturer created the bundle.
  • Use the MPN of the main product if you created the bundle. For example, if you bundle a camera with a lens and carrying bag, submit the MPN of the camera, which is the main product. 
  • Learn more about submitting bundles.
Multipacks
  • Use the MPN of the multipack, not the individual products, if the manufacturer created the multipack.
  • Use the MPN of the individual products, if you created the multipack. 
  • Learn more about submitting multipacks.

Printer cartridges 

Examples

Food and beverages

An illustration of a jug of milk with GTIN visible

Product Bio Goat Milk
title 1l Bio Goat Milk - 1l
brand Tanja’s Goat Farm
mpn 0614141123452
condition new
Electronics

An illustration showing product packaging with the MPN visible and highlighted

Product Google Chromecast
title Google Chromecast 2 - 1080p - Wi-Fi - Black
brand Google
mpn H2G2-42
gtin 7894892017139
condition new
 
 
Bundles and multipacks

An illustration of a bundle that includes a camera body, lens, and bag

Product Google 25.3 MP Digital SLR Camera and accessories
title Google 25.3 MP Digital SLR Camera Body + 35mm Lense + blue camera bag
price 435 USD
google_product_category Cameras & Optics > Cameras > Digital Cameras (152)
brand Google
gtin 00652810118491
is_bundle yes
condition new
mpn 00638HAY
Variants

If your product comes in multiple colors or sizes, you have different unique product identifiers for each of these variants. For example:

An example of ads without placeholder images

Product Google T-shirt
title Google T-shirt - Green - Small
price 11 USD
color green
size s
id 9876-S-GRN
item_group_id 9876
brand Google
gtin 9504000059422
condition new
mpn 00638HAY
 
Product Google T-shirt
title Google T-shirt - Blue - Small
price 9 USD
color blue
size s
id 9876-S-BLU
item_group_id 9876
brand Google
gtin 9504000059422
condition new
mpn 00638NIC
 
Product Google T-shirt
title Google T-shirt - Yellow - Small
price 12 USD
color yellow
size s
id 9876-S-YELLOW
item_group_id 9876
brand Google
gtin 9504000059446
condition new
mpn 00638ANG
Phone or tablet

An illustration with 3 different colors of one mobile phone

Product Google Nexus 6
title Google Nexus 6 - 32 GB - Midnight Blue - unlocked
price 199 USD
google_product_category Electronics > Communications > Telephony > Mobile Phones
brand Google
gtin 0614141123452
mpn 00638NAGPE
condition new
Store brand and white-label products

An illustration of a couch with product staging

Product white label couch
title 3 seater couch - brown / green
price 799 USD
brand MyStore
gtin 0614141123452
mpn ANG
condition new
Products without a MPN

Some products don’t have a GTIN assigned, and so you don’t need to submit one. However, if the product does have a GTIN assigned and you don’t submit it, then the product could be disapproved.

An illustration of a woman wearing a black dress

Product Customized Black Dress
title Black Dress Customized with Your Design - Size M
price 32 USD
color black
size M
identifier_exists no
condition new
is_bundle yes
mpn (Leave blank, since the dress is custom made and doesn't have an MPN)
 

An illustration of a scarf that

Product Wool Scarf
title Hand knitted polka dot wool scarf - orange / black
identifier_exists no
price 15 USD
color orange /black
condition new
mpn (Leave blank, since the scarf is custom made and doesn't have an MPN)
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