What nonsense? Its true that you either have the codes or you won't be able to hook up the system period. Iran is a dignified country lol yeah. The most backward country in the region. Russia will not provide this system to Iran. The Saudi blocked the deal and you were given an old dusty one so keep dreaming. This talk is beyond your knowledge I suggest you leave it.
You need no complete codes. You need only entry to integrate IFF sytem module . That's it.
http://nationalinterest.org/feature/why-the-patriot-missile-might-fail-americas-military-23530
America risks entering into a war with the mistaken belief that it has a shield against the enemy’s missiles when all it has is a sieve.
Joseph Cirincione
December 6, 2017
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It turns out that history does repeat itself. The news that the Patriot anti-missile system failed to shoot down a Scud in Saudi Arabia is in November 2017 is exactly what happened when the Patriot system failed spectacularly in Saudi Arabia in the Gulf War of 1991.
Then, as now, the public and officials were misled by quick, false claims of success. Then, as now, journalists reported the claims as fact without checking. Then, as now, the claims of success were used to justify huge increases in missile defense budgets. Then, as now, the administration trumpeted the false claims as proof that missile defense works..................................