Page 202 - Accounting Best Practices
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                                10–6  Extend Time Period before Computer Records Are Purged
                                elimination of paper documents does not interfere with the daily conduct of com-
                                pany business, which can fail or be severely impacted if the conversion to digital
                                documents does not go as planned.
                                        Cost:                 Installation time:

                                10–6 EXTEND TIME PERIOD BEFORE COMPUTER RECORDS
                                      ARE PURGED
                                An accounting department that relies on the data stored in its computer system to
                                handle day-to-day transactions has a problem when those records are purged. The
                                purging process usually occurs during the month-end or year-end closing
                                process, typically destroying all transaction records that are more than one year
                                old. When this happens, the accounting staff goes from having immediate access
                                to all records via their computer terminals to having to retrieve paper documents,
                                frequently from an off-site storage location. Clearly, this is a major reduction in
                                the speed and efficiency of the department as it relates to the retrieval of data.
                                   The reason why records are purged is that they take up a considerable
                                amount of space in the hard drive storage of the computer system. By purging old
                                records from time to time, it is possible to reduce storage requirements, which
                                makes it unnecessary to purchase additional storage devices. The best practice
                                advocated here is actually a set of variations on retaining some or all storage
                                space, as noted:

                                 • Delay purging old records. The most comprehensive way to avoid additional
                                   filing work is to extend the period before which records will be deleted. For
                                   example, an automatic purge after one year can be shifted to a purge after
                                   two years. However, this policy will greatly expand a computer system’s
                                   storage requirements, a serious consideration, especially when the purge
                                   period extends so far back in time that there is a diminishing return on the
                                   usefulness of the data in comparison to the cost of the extra computer stor-
                                   age. Though this is the most common version of the best practice currently in
                                   use, it should not extend storage too far back in time, given the high cost of
                                   doing so.
                                 • Only purge selected files. Rather than purge all records, it may be possible to
                                   only purge those files containing specific types of records. For example,
                                   management may not feel that it is necessary to retain accounts payable
                                   records for more than one year, whereas it may want to retain sales records
                                   for a considerably longer period. Accordingly, the best approach in this case
                                   is to delete specific files regularly, while retaining others for longer periods.
                                   This is an effective way to retain data in the system while spending less
                                   money on computer storage. It is most effective when those files containing
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