A title that may seem harmless at first glance. But anyone familiar with purchasing and BANF processes knows that this topic conceals a rat's tail of activities and complexity. This article highlights the collaboration between Lhotse and Fraport and the joint successes in optimizing Fraport's BANF process. What prompted Fraport to change its previous processes? What were the requirements? How did Lhotse solve Fraport's problems and ultimately convince Fraport of its solution?