Please be aware: Your warranty is only valid in the region where you purchased your unit. If you buy your unit in Germany, then you must have the unit serviced in Germany, or within that region. If you live in South America, you will be interacting with the distributor for the country that you live in. It is for this reason that Line 6 recommends that you always buy your unit locally.
You will need to present your original, dated proof of purchase to have any warranty work performed