Abstract: A printer (2; 52) prints documents which, after arriving in a finishing system (1; 51), are detected and finished in an order corresponding with the order in which the documents have been printed by the printer (2; 52). The printer (2; 52) generates verification markings following one of the documents and prior to a next one of the documents. The number of documents that arrive in an interval limited by at least one of the verification markings are counted and compared with a reference number. An error message is generated if the counted number of arrived documents does not agree with the reference number. This makes it possible to monitor whether, after the documents have been printed, any faults have occurred. Further, a system for finishing documents is described.

Abstract: From received postal items patterns are recorded and recorded information representing the recorded patterns is generated. Each received postal item is processed directly after the information is recorded from the postal item. The information representing the recorded patterns is stored in a log of received mail. Since the recordal of the pattern is carried out before the step of processing, any log or archive prepared on the basis of the initial recording step will include any documents which are lost or damaged during the subsequent processing.