The rule was absolutely clear: each and every DP was to be registered just once with two DP 2 cards. However, there are sometimes multiple DP 2 cards for a single person in the Arolsen Archives. For example, Johannes Grauberg was registered twice – first on August 21, 1945, and then again on November 6, 1945. One DP card from the first date is stored in the Arolsen Archives, while there are three from the second date.