<div>
Why are they rejecting them? What barcode types do they accept? UPC?
</div>


Why are they rejecting them? What barcode types do they accept? UPC?

<div>
They accept EAN13, most of barcodes are accepted, few are rejected.
</div>


They accept EAN13, most of barcodes are accepted, few are rejected.

<div>
If they can tell you why they are being rejected, I might be able to provide some suggestions.
</div>


If they can tell you why they are being rejected, I might be able to provide some suggestions.

<div>
Actually even they do not know about their system&gt; They are users, not developers.<br />
<br />
My question is about EAN13 rules.
</div>


Actually even they do not know about their system> They are users, not developers.

My question is about EAN13 rules.

<div>
<div class="content wysiwyg-content">
Hello experts,<br />
<br />
We make some local products. To sell those in the market, we generate local barcodes for them.<br />
<br />
EAN13 is the most used barcode in our region, that's why I developed my system to generate the first 12 digits of the barcode from some item information like number and date of release. The 13th &nbsp;digit is the key and it generates using it's standard algorithm which is available and known.<br />
<br />
I have faced a problem with some hyper markets (like Carrefour) that their systems didn't accept some of my locally generated barcodes.<br />
<br />
The question: <br />
<br />
Are there any rules for those barcodes which let Carrefour to reject my generated ones?<br />

</div>
</div>


Hello experts,

We make some local products. To sell those in the market, we generate local barcodes for them.

EAN13 is the most used barcode in our region, that's why I developed my system to generate the first 12 digits of the barcode from some item information like number and date of release. The 13th  digit is the key and it generates using it's standard algorithm which is available and known.

I have faced a problem with some hyper markets (like Carrefour) that their systems didn't accept some of my locally generated barcodes.

The question: 

Are there any rules for those barcodes which let Carrefour to reject my generated ones?


Generating local EAN barcodes

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