!!! Overview [1]
[{$pagename}] is an [Unique Identifier] for the [Producer] component of the [GS1] [Global Trade Item Number] where the the first three [digits] of the [EAN]-13 usually identify the [GS1 Country Code](s) which the [manufacturer] has joined. (not necessarily where the product is actually made).

Note that [EAN]-13 codes beginning with 0 are actually 12-digit [UPC] codes with prepended 0 digit. 

Some products sold by retailers outside United States and Canada have been using [EAN]-13 codes beginning with 0, since they were generated by GS1-US.

The 020-029 [{$pagename}] are worth a special mention. [GS1] defines this as being available for retailer internal use (or internal use by other types of business). Some retailers use this for proprietary (own brand or unbranded) products, although many retailers obtain their own [GS1 Manufacturer Code] for their own brands. Other retailers use at least part of this prefix for products which are packaged in store, for example, items weighed and served over a counter for a customer. In these cases, the barcode may encode a price, quantity or weight along with a product identifier - in a retailer defined way. The product identifier may be one assigned by the Produce Electronic Identification Board (PEIB) or may be retailer assigned. 

Retailers who have historically used [UPC] barcodes tend to use [{$pagename}] starting with "02" for store-packaged products.

The [EAN] "country code" 978 (and later 979) has been allocated since the [1980s] to reserve a [Unique Country Code] ([UCC]) for [International Standard Book Number] ([ISBN])


!! Reserved [{$pagename}]
%%zebra-table
%%sortable
%%table-filter
||Prefix|Classification
|20 - 29|In-store numbers
|977|Periodicals [International Standard Serial Number] ([ISSN])
|978 - 979|[Books] [International Standard Book Number] ([ISBN])
|980|Refund receipts
|981 - 982|Common currency coupons
|99|Coupons
/%
/%
/%

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
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* [#1] - [International_Article_Number|Wikipedia:International_Article_Number|target='_blank'] - based on information obtained 2017-10-28- 
* [#2] - [GS1 Company Prefix|https://www.gs1.org/standards/id-keys/company-prefix|target='_blank'] - based on information obtained 2018-10-02-