XML Node Char Error

Hi Jan, Stefan again. I have this message.
Source of the node:

Error Message:

What do you mean its an error in my data ?

Thanks,
Stefan

It looks like it. n8n is using under the hood this module to convert the data:

It is normally very good and reliable so if it errors I would first assume that there is something wrong with the data. Maybe you can remove parts of the XML till it works to figure out what is breaking it exactly.