| 摘要 |
In order to eliminate addressing errors on postal articles in a process ( 8, 10 ) of sorting, routing, and delivery performed by a postal operator on mail articles ( 3' ) handed over to the operator by a sender of mail articles constituting a client of the postal operator, respective mail article identity numbers (I) are generated for the mail articles to be processed in the sorting, routing, and delivery process, said identity numbers (I) being applied to the respective mail articles in machine readable form ( 5 ) and being recorded in an electronic file (F) in association with data (A) giving the postal addresses of the mail articles. These mail article identity numbers (I) or "extended client codes" are generated by the mail article sender and they are applied by the sender to the mail articles prior to handing them over to the postal operator. The file (F) containing the mail article identity numbers in association with the data giving postal addresses is also prepared by the sender of mail articles and is transmitted by the sender to the postal operator.
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