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can quantity be treated as a variant

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# 1
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We sell the same products in different "sizes" - (i.e., quantities - eg seed packets, 1 oz etc) We give each  product/size combination a unique MPIN - and all of the MPIN values for a particular product land on the same page with a drop-down allowing a visitor to select the "size" (quantity) they want to purchase.  Do we handle the MPIN # for the different sizes as variants of an 'item group id' representing the specific product, such as Dwarf Yellow Lily Seeds with offer sizes such as "packets', "4 oz", "15 oz"



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Re: can quantity be treated as a variant

[ Edited ]
Top Contributor
# 2
Top Contributor

yes, both size and color may be used as variants --
color has rather specific restrictions but size can be
almost any value that is relevant, can be recognized

by users, and differentiates the variant; e.g. 4 oz


the item_group_id must be identical for all items in the

variant group and it is recommended that each variant

should have a unique link url -- either a separate page

or with parameters that pre-selects the variant; e.g.

that said, mpn cannot be self-assigned by merchants;
mpn, gtin, brand are global-trade values that can only
be assigned by a manufacturer -- global-trade values
must be identical across all merchants selling the item.


self-assigned global-trade-data is grounds

for disapproval or suspension, at any time.


see also


Re: can quantity be treated as a variant

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# 3
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We are the manufacturer for the vast majority of products we sell, in that we take in a raw materials and create a marketable product - for example we take in seeds of a certain variety and then create & produce relevant sizes - such as a seed packet with a specified number of seeds in it, 4oz, etc.; these seed products are produced in our facilities and sold under the Harris Seeds name which is our brand. So I think we are clear on that account.


So my main question is whether the "size" parameter can be used to represent predefined quantities that describe a product. On this it sounds like the answer is - yes. 


I will confer with our development team re how a "size" value is pre-selected in product landing pages.


Thanks for your help.

Re: can quantity be treated as a variant

[ Edited ]
Top Contributor
# 4
Top Contributor

first, you're welcome.

yes, the size attribute (parameter) can certainly be used to
to represent predefined quantities that describe a product.


be certain identical item_group_id values are also assigned

to all items in the variant group -- or the variants cannot be

submitted without risking such items being dropped from

the auctions (listings), disapproval, or suspension.

yes, the variant (size) should either be pre-selected or
a separate landing-page; especially if the (size) variant
has a different price -- otherwise, such variants simply
cannot be submitted since the price displayed on the
landing-page must exactly match the price submitted --
or is otherwise a policy violation and is grounds for
disapproval or suspension, at any time.

yes, if you are both the merchant and manufacturer the only exception
is brand; brand may be either not be submitted or, optionally submitted
with a private brand value -- but only if you are both the merchant and
brand-manufacturer of the exact product being submitted.

google never requires a manufacturer or merchant to invent,
create, or self-assign, any global-trade-data -- whatsoever.

that is, if valid, required mpn, brand, or gtin data do not
currently exist, do not submit any mpn, brand, or gtin data,
and submit identifier_exists with an exact value of FALSE

or, submit identifier_exists with an exact value of FALSE
and submit a private brand with no mpn and no gtin data --
for those specific items that you also manufacture.

otherwise, legal, valid, required, global-trade-data must be submitted
as assigned by the brand-manufacture to the exact item being sold --
all merchants selling the item must submit the same global-trade-data.


generally, the store's brand, the name of the store that
is set in the account, is assigned globally, automatically;
the brand parameter (attribute) value is mainly a legal

designation by a brand-manufacturer to a specific item.