Item group ID [item_group_id]

An example ad showing a shoe with different color variants

Use the item group ID [item_group_id] attribute to group product variants in your product data. Variants are a group of similar products that only differ from one another by product details like size [size], color [color], material [material], pattern [pattern], age group [age_group], and gender [gender].

When you use an item group ID [item_group_id] to group your products, you can ensure that your product and its variants are shown to customers as a group, instead of separately.

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When to use

Required for enhanced free listings for product variants

Required for Shopping ads for product variants targeting the following countries:

  • Brazil
  • France
  • Germany
  • Japan
  • United Kingdom
  • United States

Format

Follow these formatting guidelines to make sure Google understands the data you're submitting.

For details on when and how to submit values in English, learn more about submitting your product data

Type Unicode characters (Recommended: ASCII only): alphanumeric, underscores, and dashes
Limits 1–50 characters
Repeated field No
Schema.org property
(What’s this?)
Product.inProductGroupWithID, Type: Text
 
File format Example value
Text feeds AB12345
XML feeds <g:item_group_id>AB12345</g:item_group_id>

To format your data for Content API, see the Content API for Shopping.

Guidelines

Follow these guidelines to make sure you submit high-quality data for your products.

Minimum requirements

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

  • Submit a unique ID for each different product.Use the same value for item group ID [item_group_id] attribute for all variants of the same product. For example, a T-shirt comes in 9 variants: 3 sizes (small, medium, large) and 3 colors (red, blue, green). Submit each variant as a separate product (for a total of 9 separate products), and submit the same value for the item group ID attribute for each to indicate that these are variants of the same product.
  • Each distinct item group must have a unique value for the item group ID [item_group_id]attribute.
    • Don’t rely on casing to make the item group ID unique. The values "abc123" and "ABC123" are interpreted as the same product.
    • Don’t reuse or recycle the same item group ID attribute for different products.
  • Submit a variant attribute along with the item group ID attribute. When you submit an item group ID, make sure that your variants use at least one of the variant attributes: color [color], pattern [pattern], material [material], age group [age_group]gender [gender], size[size].

  • Use the same variant attributes for all products with the same item group ID. For example, if you submit a dress in 2 colors and 2 sizes, each product you submit must provide a value for the color [color] attribute and the size [size] attribute. Don't just provide the color or size for one dress, but not the others.

  • Make sure that the product details displayed on your landing page match the values you provide for each attribute like title [title], color [color], pattern [pattern], material [material],price [price], availability [availability], and image link [image_link]. Learn more about requirements for landing pages

Best practices

These best practices can help you go beyond the basic requirements to optimize your product data for performance.

  • Use the parent SKU as the item group ID value for all variants of the same product. Don't submit a parent SKU as a separate product. If you'd like to group variants using a parent SKU, use the parent SKU as the value for the item group ID [item_group_id] attribute for all products in the variant group.

  • Don’t mix up item group ID and ID attributes. Use the ID attribute to uniquely identify a single product, and use item group ID [item_group_id] to group together several products as variants.
  • Don’t submit a value for the item group ID attribute if your product is not a variant. If your product is similar to other products, but not specifically a variant, don’t t submit the item group ID attribute. Some examples of products that are not variants include a suit consisting of a jacket and pants or a set of bath accessories.

  • Use a stable item group ID value for each group of product variants. Once you've assigned an item group ID to a product, don't change it. If the item group ID changes often, it could cause inconsistency in the way variants are grouped and shown to customers.
  • Don’t use the item group ID attribute for unsupported variants. If your product varies by an unsupported attribute (such as car make and model), or if your product is a build-to-order custom good with a large number of variants (more than 30), then don't use the item group ID attribute to indicate your variants. Review best practices for submitting unsupported variants
  • To group and display product variants to customers on Buy on Google, make sure to add both the item group ID [item_group_id] attribute and a valid GTIN [gtin] to each variant of your product. If you’re a manufacturer or brand owner, you can sign up for Google Manufacturer Center, which allows manufacturers and brands to submit authoritative product data such as GTIN [gtin]. Learn more about GTINs

Examples

General examples

Green checkmark

Submit variant details through the variant attributes. For example:

Product data for red Google logo T-shirt, size small

Attribute

Value

Title [title]

Google Logo T-shirt - Small - Red

ID [id]

12345-S-R

Color [color]

Red

Size [size]

Small

Item group ID [item_group_id]

12345

Product data for blue Google logo T-shirt, size medium

Attribute

Value

Title [title]

Google Logo T-shirt - Medium - Blue

ID [id]

12345-M-B

Color [color]

Blue

Size [size]

Medium

Item group ID [item_group_id]

12345

Red X

Don’t submit variants without variant attributes.

Apparel products

Apparel products typically come in variants. Use the same item group ID [item_group_id] for each variant. Here’s an example that comes in 2 colors, each in 3 sizes.

Note: The gender [gender] attribute may be mandatory depending on the country of sale, and is required in order for variant attributes to be displayed accurately.

For this example, you’d submit these 6 variants:

 Product data for white Google Logo T-shirt, size small

Attribute

Value

Title [title]

Google Logo T-shirt - Small - White

ID [id]

12345-S-W

Color [color]

White

Size [size]

Small

Item group ID [item_group_id]

12345

Product data for black Google Logo T-shirt, size small

Attribute

Value

Title [title]

Google Logo T-shirt - Small - Black

ID [id]

12345-S-B

Color [color]

Black

Size [size]

Small

Item group ID [item_group_id]

12345

Product data for white Google Logo T-shirt, size medium

Attribute

Value

Title [title]

Google Logo T-shirt - Medium - White

ID [id]

12345-M-W

Color [color]

White

Size [size]

Medium

Item group ID [item_group_id]

12345

 

Product data for black Google Logo T-Shirt, size medium

Attribute

Value

Title [title]

Google Logo T-shirt - Medium - Black

ID [id]

12345-M-B

Color [color]

Black

Size [size]

Medium

Item group ID [item_group_id]

12345

 

Product data for white Google Logo T-Shirt, size large

Attribute

Value

Title [title]

Google Logo T-shirt - Large - White

ID [id]

12345-L-W

Colo [color]

White

Size [size]

Large

Item group ID [item_group_id]

12345

 

Product data for black Google Logo T-Shirt, size large

Attribute

Value

Title [title]

Google Logo T-shirt - Large - Black

ID [id]

12345-L-B

Color [color]

Black

Size [size]

Large

Item group ID [item_group_id]

12345

Shoes

Submit shoes in the same way as other apparel products. Group variants of the same product by adding the same item group ID [item_group_id] to each variant.

 

Product data for blue, orange, and green Low Top Shoes, size 8 narrow

Attribute

Value

Title [title]

Low Top Shoes - 8 Narrow

ID [id]

12460-8b-blu

Color [color]

Blue/orange/green

Size [size]

8B

Item group ID [item_group_id]

12345

 

Product data for blue, orange, and green Low Top Shoes, size 8
Attribute Value

Title [title]

Low Top Shoes - 8

ID [id]

12460-8-blu

Color [color]

Blue/orange/green

Size [size]

8

Item group ID [item_group_id]

12345

 

Product data for Low Top Shoes blue/orange/green, 8 wide
Attribute Value

Title [title]

Low Top Shoes - 8 - Wide

ID [id]

12460-8w-blu

Color [color]

Blue/orange/green

Size [size]

8W

Item group ID [item_group_id]

12345

Electronics

Electronics can be submitted as variants. For example, if a phone is available in multiple colors, you can submit each as a variant by using the same value for the item group ID [item_group_id]attribute.

An illustration with 3 different colors of one mobile phone

Product data for a blue Google Nexus 6, 32 GB, unlocked

 

Attribute

 

Value

Title [title]

Google Nexus 6 - 32 GB - Midnight Blue - unlocked

ID [id]

2345-32gb-midblu

Color [color]

Midnight blue

Item group ID [item_group_id]

2345

 

Product data for a white Google Nexus 6, 32 GB

Attribute

Value

Title [title]

Google Nexus 6 - 32 GB - Cloud White - With contract

ID [id]

2345-32gb-cldwh

Color [color]

Cloud white

Item group ID [item_group_id]

2345

Furniture

Furniture can be submitted as variants. For example, if a couch is available in multiple fabrics, you can submit each as a variant by using the same value for the item group ID [item_group_id].

An illustration of a couch with product staging

 

 Product data for mid-century microfiber sofa, yellow and gray dot pattern

Attribute

Value

Title [title]

Mid-Century Microfiber Sofa - Dot Pattern - Yellow and Gray

ID [id]

3456-dot-yllw-gry

Color [color]

Yellow/gray

Material [material]

Suede

Item group ID [item_group_id]

3456

 

Product data for mid-century microfiber sofa, green leather
 

Attribute

 

Value

Title [title]

Mid-Century Microfiber Sofa - Leather - Green

ID [id]

3456-lth-grn

Color [color]

Green

Material [material]

Leather

Item group ID [item_group_id]

3456

 

Product data for a walnut-colored plywood lounge chair

Attribute

Value

Title [title]

Molded Plywood Lounge Chair - Walnut

ID [id]

1a2b3c-wal

Color [color]

Walnut

Material [material]

Plywood

Item group ID [item_group_id]

1a2b3c

 

Product data for an ash-colored plywood lounge chair

Attribute

Value

Title [title]

Molded Plywood Lounge Chair - Ash

ID [id]

1a2b3c-ash

Color [color]

Ash

Material [material]

Plywood

Item group ID [item_group_id]

1a2b3c

Makeup

Makeup products can be submitted as variants. For example, if makeup comes in multiple colors, you could submit each color as a variant by using the same value for the item group ID [item_group_id] attribute.

Product data for beige liquid makeup

Attribute

Value

Title [title]

Blend Liquid Makeup - Beige

ID [id]

0987-b

color [color]

Beige

Item group ID [item_group_id]

0987

 

Product data for liquid makeup, beige-medium

Attribute

Value

Title [title]

Blend Liquid Makeup - Beige Medium

ID [id]

0987-bmed

Color [color]

Beige medium

Item group ID [item_group_id]

0987

 

Groceries

Groceries can be submitted as variants. For example, let’s say you’re selling bags of Basmati Rice that come in different sizes and are sold by weight. You could submit each item as a variant by using the same value for the item group ID [item_group_id] attribute.
Product data for basmati rice, extra long grain

Attribute

Value

Title [title]

Basmati Rice - Extra long grain

ID [id]

575185159

Item group ID
[item_group_id]

123456

Price [price]

11.20 USD

Unit pricing measure [unit_pricing_measure]

5 lbs

Unit pricing base measure [unit_pricing_base_measure]

1 lb

 

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