A fill-in cross-list screening procedure for the five systems (US OFAC, US BIS, the EU, the UK, the UN) plus Japan's Foreign End User List — where, what and how to screen. Covers SDN/non-SDN and the BIS lists, the 50% / ownership-control tests, official source URLs and update cadence, and Red Flags. Based on each authority's primary sources; listing is a regulatory classification, not a judgment — final decisions rest with each authority's original list and your own officer.