https://help.oclc.org/Library_Management/WorldShare_Circulation/Configuration/OCLC_Service_Configuration_-_WMS_Circulation/Integrations/010Offline_Client

Find information about downloading and using the Offline Client, which is an application that allows you to perform circulation transactions while the WorldShare Circulation system is not available and upload them when the system is available again.

Offline Client has previously needed to be installed in users accounts and by someone with WorldShare account. If the WSkey is expired a new one can be requested.