In ti.xml ( Tigrinya ) we have the following alias:
"am" is Amharic. We usually don't use aliases for whole sections like this, since it doesn't really lend itself to proper addition and change of new data in "ti". Tigrinya and Amharic are NOT the same language. Assuming that existing alias is indeed valid ( which is somewhat questionable in my mind ), I would still recommend just copying the existing data from "am" to "ti", so as to prevent confusion.