> 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/currency_selection_preauth.md).

# currency\_selection\_preauth

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**Description**

When the host response contains DCC information, the card holder will be prompted to pay using either the local currency or the card holder’s home currency.

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**Configuration Parameters**\\

`Merchant.DccEnabled` - Indicates that terminal supports dynamic currency conversion.

`Merchant.DccMode = 0` - Indicates that terminal supports dynamic currency conversion during authorization.

`Merchant.DccMarkupValue` - Indicates Foreign exchange markup value used during conversion.

`Merchant.PreAuthFollowOnDccEnabled` - When enabled, the currency selection screen will be shown during pre-authorization follow-on transactions, such as completion, extension, and update.

\
**Error Scenarios**\\

If the chip card is removed, the transaction will be cancelled and no reversal will be generated.

If the transaction is cancelled, Transaction cancelled, user aborted message will be shown.

If the wait for user selection times out, Transaction Aborted, user timeout message will be shown.

If the device crashes or device reboots while on this screen, when the payment application restarts or device boots up, no power failure recovery will happen.
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