If you change any information in the System menu of this shipping application, Parcel caches this information. When you select System > Refresh Application, Parcel writes the cached data to the appropriate database. Typically, you use the Refresh command after you make a configuration change using the Configuration (Web Admin) Tool.

When you click [Refresh]n, a message appears that this should only be done during off-shipping hours (when shipping is not being done or is low-volume) because the Refresh command locks down shipping (see the following Warning.)

Warning: When you make most configuration changes using the Web Admin tool, Parcel automatically performs a system Refresh.  Thus you need to use extreme caution when making configuration changes resulting in a system refresh. Do not make configuration changes using the Web Admin tool during the shipping process. Make all configuration changes during off-hours when Parcel shipping functionality is not in use. This is because (as stated above) a system refresh locks down shipping. (With automatic Refresh, no Warning message appears.)