Offline Transactions {#sis-standalone-mode-offline-txn-intro}
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Offline mode is a feature that you can enable and customize in the `Business Center`. The default setting is `Disabled`. For more information, see [Customizing the Acceptance Devices App](/docs/cybs/en-us/sis-pax/integration/all/rest/sis-pax/semi-integrated-solution-pax-get-started-intro/sis-ad-app-customize-intro.md "").

> WARNING
> By using this feature, you assume the risk of failed transactions and the possibility of increased fraud and chargebacks. Process transactions offline only when required such as during an internet outage. Whenever possible, process transactions online instead. For more information, see [Sale](/docs/cybs/en-us/sis-pax/integration/all/rest/sis-pax/sis-pymnt-svcs-standalone-mode-intro/sis-standalone-mode-sale.md "").  
> When an internet connection is available, submit the offline transactions batch for authorization while in Offline mode.  
> Use this information to enable and disable Offline mode when the app is in Standalone mode. When an internet connection is not available, you can use this mode to process offline sale and refund transactions.