> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/functional-specification/host_auth.md).

# host\_auth

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![](/files/yu441XDOl88k9KIdYPjs)
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**Description**

Displays that the device is performing an online authorization by communicating to the host. If the device cannot connect to the host or a forced offline purchase is in progress, the transaction will be authorized offline, given that Store And Forward (SAF) is enabled and the transaction meets the SAF approval criteria.

See [Store And Forward (SAF)](broken://pages/t1loTZ4Sr38uqUbMEd0M)

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**Configuration Parameter**

See ‘SAF Configuration’ under Terminal Table in [Terminal Configuration](broken://pages/FM61vT32Qr2qtu9mk5ta)

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**Error Scenarios**

If the customer removes the chip card, the transaction will be cancelled and a reversal will be generated.

If the device crashes or device reboots while on this screen, when the payment application restarts or device boots up, power failure recovery will occur and the transaction will be declined and a reversal will be generated.
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