In this paper, problem solving in texts written by ancient Assyrian traders within the Assyrian Trade Network (20th - 18th centuries BCE) is studied. The core phrase, aḫī atta ("you are my brother"), together with possible variations, is investigated in terms of the contexts in which it appears in the ICK4 Old Assyrian corpus.
The data suggests that at least within this corpus, the main function of the phrase is pragmatic and serves to establish an elevated level of mutual trust or increased attention in situations of special interest to the sender of the tablet.