Documents must be archived. Electronic archiving has become a universally recognized and practical method of digitally maintaining information. The formats that are used vary from simple raster formats (BMP, PNG and so on) to formats that have complex structures (MO:DCA, AFP) and also include PDF and PDF/A. As the complexity of the individual formats increases, the requirements for the structure and completeness of the documents must be adjusted accordingly and realized consistently. The aim is to ensure that you can reproduce these documents even after a long time. It only becomes clear at the time of the reproduction whether the criteria for a successful reproduction were also consistently implemented and realized.