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Thank you for your answers, howerver I forgot to specify that the site is not on wordpress but on Umbraco.

So aside from using a plugin, the source of the problem would be at what level? When translating the category? Or the source of the problem is Umbraco directly when generating the url?

Hi !

I wonder if anyone has ever experienced this problem before. One of our client is having some trouble with his multilanguage and international website.

A small number of URLs contains 2 different language.

Exemple : http://exemple.com/es-ar/productos/compression-baggers/empacadora-formacion-llenado-sellado/

The part in bold is in english and the rest in spanish.
I need some help to find the source of the problem. The number of URLs like this doesn't stop to increase, but it remains under control.

I temporarily implanted 302 redirects while trying to find the source of the problem and fix it.

Thank you for your help.