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When to use id and item_group_id

Visitor ✭ ✭ ✭
# 1
Visitor ✭ ✭ ✭

We have recently upgraded our product feed to include size and colour variations, but I now don't know which id show go where.

 

In the feed our product id is item_group_id and the product options (size and colour) id is the id, this seems ok. But all our reviews are done by our product id and shown on our product page.  

<meta itemprop="identifier" content=""> is our product id (item_group_id) not option id

<meta itemprop="sku" content=""> is item_group_id 

Google trusted shops google_base_offer_id is item_group_id

google remarketing ecomm_prodid: is item_group_id

 

Since the change our products in Google Shopping have stopped showing rating stars, and I'm about to set up remarketing, I'm worried that I should be using the id in the feed and not item_group_id, but this makes no sense and will never work with product reviews?

 

Cheers

 

 

 

 

 

 

2 Expert replyverified_user
1 ACCEPTED SOLUTION

Accepted Solutions
Marked as Best Answer.
Solution
Accepted by topic author Jonathan B
March 2016

Re: When to use id and item_group_id

[ Edited ]
Top Contributor
# 8
Top Contributor

first, you're welcome.

 

the identifier, sku, google_base_offer_id, and ecomm_prodid,
should all use the id attribute value within the data (feed) --
never item_group_id

 

each variant must be submitted separately --
each link should preselect an exact variant.

google does not require all variants to be submitted --
however, if any variant is submitted, all rules and
policies must be followed.

for example, submitting any out of stock (variant) item as in stock,
is a policy violation and grounds for disapproval or a (permanent)
suspension from the program, at any time.

a product-review is not tied to an individual variant;
a review is for the product, regardless of variants --
except for the top-page display, above a product-review.

on-page rich-snippets must either (a) list all variants, individually --
each item-offer with a proper inventory-item availability per variant;
or (b) list a single item-offer (for one single variant) on a separate,

single-item (variant) landing-page.

 

for example, if there are 80 variants then, the rich-snippets, must
list either, 80 items with 80 (accurate) availability values on a page;
or, one item on 80 separate offer pages, each with one availability --
(as separate landing-pages or selected sever-side via url-parameters).


any (rich-snippets) sku or gtin must match the feed id and gtin.

rich-snippets must reflect physical inventory reality, at all times,
and adhere to all merchant-center policies; otherwise, the optional
automatic-item-updates feature must be disabled in the account,
to avoid a disapproval or suspension.

 

item_group_id is only for the data-feed to tag a variant-group.

 

id is for rich-snippets, google-trusted-stores, and dynamic-remarketing --

these must all match the id attribute within the submitted data (feed).

 

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Re: When to use id and item_group_id

Top Contributor
# 2
Top Contributor
The item group id has to be identical to all variants of the same group. Hence item_group_id. You should not place the product id in item_group_id as this will than force each product to be unique and not a variant.

As per Google's policy, if you have variants they have to be listed as variants by having a unified identifier in the attribute item_group_id

As for the ratings disappear, I have no idea unless the id's have changed. But your ecomm_prodid has to be product id, not item_group_id Maybe @Celebird can shed a light on this one.
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Re: When to use id and item_group_id

Visitor ✭ ✭ ✭
# 3
Visitor ✭ ✭ ✭
Say we have a product that comes in 10 colours and 8 sizes possible 80varients these are displayed as one product with our product id google item_group_id and 80 variants with a different google feed id, this is correct for google shopping as we have 80 ids with one item_group_id.

As I have one product page for the 80 variants, what do I use on our product page for the product id needed for meta tags, Google analytics/remarketing and Google Cert Shop as listed above?

Re: When to use id and item_group_id

Top Contributor
# 4
Top Contributor
Normally what Google recommends is having the product pre selected for each variant. The only way to do this is by having a query string in the url that defines the variant.

I suggest in this case that you write a script that pre selects the variant and also changes the microdata and remarketing tag.

This would than correct the issue. However not sure if adding the reviews of the initial parent product onto the variants will work, as the reviews are not for that product. I have actually not done reviews yet, maybe another forum member will have a better answer than I have, as I think there might be some added value to what others have to say.
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Re: When to use id and item_group_id

[ Edited ]
Top Contributor
# 5
Top Contributor

the identifier, sku, google_base_offer_id, and ecomm_prodid,
should all use the id attribute value within the data (feed) --
never item_group_id

variants within the feed are individual physical inventory items --
each with an individual id, grouped using identical item_group_id.

e.g. 80 items submitted within a variant-group must have
80 unique id values and one identical item_group_id value --
items submitted as in stock must be physically in inventory.

product-reviews are irrespective of the individual variant --
but are typically selectable above the product-review details,
based on the item_group_id and related variant attributes; e.g.
https://www.google.com/shopping/product/18279651266973518679

a variant is usually selected server-side, as only one, single, item-offer
preselected and displayed, with the proper single-item, rich-snippets; e.g.
http://www.example.com/dress-182.html?color=red&size=m
otherwise, if multiple offers must be on the same page then, each offer

must  be listed with a separate sku or gtin -- each must exactly match
the id or gtin attribute-value within the submitted data (feed).

item_group_id is mainly to group variants and avoid a disapproval
or suspension, for violating the merchant-center policies, related
to duplicate listings -- submitting inventory items, multiple times.

Re: When to use id and item_group_id

Visitor ✭ ✭ ✭
# 6
Visitor ✭ ✭ ✭
Hi Emmanuel
I'm sorry this makes no sense to me, it sounds like you are suggesting having 80 different urls going to he same product, creating a massive amount of duplicate content, even with Canonicals I don't think its a good idea.

Many of our products are fashion items so as size and colour variations sell out they are removed, if small purple is sold out and many people have bought our product in other variations how will Google remarketing or reviews know what to do, as all the history is lost?

To me it would make far more sense for Google to use the main product id (group id) instead of variant ids for reviews remarketing etc?

Thanks for your help anyway.

Re: When to use id and item_group_id

Visitor ✭ ✭ ✭
# 7
Visitor ✭ ✭ ✭
May thanks.

I know the feed is set up correctly as you sate, but to go back to my question, is our product page correct in showing
<meta itemprop="identifier" content=""> item_group_id
Should this loop through and show all variant is on a page{
<meta itemprop="sku" content=""> feed id (per variant)
}
Google trusted shops google_base_offer_id is item_group_id
google remarketing ecomm_prodid: is item_group_id

Cheers
Jonathan
Marked as Best Answer.
Solution
Accepted by topic author Jonathan B
March 2016

Re: When to use id and item_group_id

[ Edited ]
Top Contributor
# 8
Top Contributor

first, you're welcome.

 

the identifier, sku, google_base_offer_id, and ecomm_prodid,
should all use the id attribute value within the data (feed) --
never item_group_id

 

each variant must be submitted separately --
each link should preselect an exact variant.

google does not require all variants to be submitted --
however, if any variant is submitted, all rules and
policies must be followed.

for example, submitting any out of stock (variant) item as in stock,
is a policy violation and grounds for disapproval or a (permanent)
suspension from the program, at any time.

a product-review is not tied to an individual variant;
a review is for the product, regardless of variants --
except for the top-page display, above a product-review.

on-page rich-snippets must either (a) list all variants, individually --
each item-offer with a proper inventory-item availability per variant;
or (b) list a single item-offer (for one single variant) on a separate,

single-item (variant) landing-page.

 

for example, if there are 80 variants then, the rich-snippets, must
list either, 80 items with 80 (accurate) availability values on a page;
or, one item on 80 separate offer pages, each with one availability --
(as separate landing-pages or selected sever-side via url-parameters).


any (rich-snippets) sku or gtin must match the feed id and gtin.

rich-snippets must reflect physical inventory reality, at all times,
and adhere to all merchant-center policies; otherwise, the optional
automatic-item-updates feature must be disabled in the account,
to avoid a disapproval or suspension.

 

item_group_id is only for the data-feed to tag a variant-group.

 

id is for rich-snippets, google-trusted-stores, and dynamic-remarketing --

these must all match the id attribute within the submitted data (feed).

 

Re: When to use id and item_group_id

Top Contributor
# 9
Top Contributor
No, that is not correct.

You need to list the ID, not the item_group_id

On the following page the first element is ID, that is what you need to use
https://support.google.com/merchants/answer/188494?hl=en

Also read the remarketing guidelines
https://developers.google.com/adwords-remarketing-tag/parameters

Which all state ID, not item group id.
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