If the AllowOfflineCirculation preference is set to 'Enable' the library staff can continue to perform circulation actions within Koha when the system is offline.
Before the first time the system goes offline go to Circulation and choose 'Built-in offline circulation interface'
And synchronize your data on every circulation computer by clicking the 'Synchronize' link on the right of the screen.
This will allow you download a local copy of your patrons and circulation data. Click the 'Download records' link at the top of the page to synchronize your data.
Once your data is downloaded you will see the dates your data was last synced to the right of each data set.
This should be done regularly in preparation for any unexpected connection losses.
When your system goes offline visit the Offline Circulation page in Koha and click 'Check out' or 'Check in' to perform offline actions.
Checking out is done by searching for the patron by barcode or name at the top of the 'Check out' screen. After selecting a patron you will be presented with the synced patron info, including fines and check outs.
Scan the barcode of the item you would like to check out and enter a due date. If you don't enter a due date Koha will prompt you for one.
Once the item is checked out it will appear below the patron's info.
Once the system is back online visit the Synchronize page on the Offline Circulation module and click 'Upload transactions'
After the files are uploaded you can click 'View pending offline circulation actions' on the right to process the actions.
See the full documentation for Offline Circulation in the manual (online).
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