An upgrade of computer systems at some Fonterra sites prior to the recall also meant that product tracing took "longer than it should have." Fonterra has also admitted that despite its "established domestic and international product recall systems, the size and complexity of the WPC80 recall was a factor." Improvements "well underway" In response it handling of the precautionary recall, Fonterra has implemented a number of changes that it claims will increase its "focus on quality and safety across the end-to-end supply chain" and strengthen the cooperative's "product recall and supply management systems."