My shop uses multi-currency : how to make Facebook detect the correct currency?

In order to allow Facebook (or TikTok) to see the parameter corresponding to the currency in the URLs of your products, you must allow this parameter in the "robot.txt" file of your PrestaShop installation. Follow this procedure:

  1. At the root of your PrestaShop installation, look for the file "robot.txt" and open it with a text editor such as Notepad++
  2. Look for the strings:

    Disallow: /*?id_currency=


    Disallow: /*&id_currency=

  3. Move them in the part of allowed parameters and modify the term "Disallow" by "Allow":


  4. Save the "robot.txt" file.

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