Issue with Product Weight Barcode Not Working as Expected in POS

Question

I’ve been facing an issue with configuring the *Product Weight Barcode* in the POS application. Despite following the instructions provided in the documentation, the system does not fetch the product and weight as expected.
The documentation itself appears contradictory:
In one instance, it states that the barcode should end with a *check digit* of *8*. In another example, the barcode ends with a *check digit* of *2*  odoo3 [3]
Additionally, the video tutorial linked below demonstrates configuri

Waleed Ali Mohsen · Accepted Answer

Hello,
The last digit of EAN–13 barcodes [1] is a check digit. The check digit is used to detect errors mostly caused by human transcription and it computed using a formula as below:
To compute the check digit follow the simple rules:
Sum all the digits in even positions and multiply by 3; Add all the the digits in odd positions (except for the last one which is check digit) to the number you’ve got; Divide that number by 10 and take the remainder; If the remainder is not 0, subtract it from 10.

Nedal Alaffouri · Answer

Thank you, Waleed, for your response.
I understand how check digits work. My question is: *what check digit should we enter in the product profile?*
For example, the check digit for the barcode starting with *211234500000* is *8*, resulting in the full barcode *2112345000008*.
If we enter this barcode in the product page, the system recognizes only barcodes ending with *8*, such as:
*2112345005508* *2112345039978*  However, any other barcode with a different check digit does not work.
To solve t

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