> For the complete documentation index, see [llms.txt](https://docs.xplorpay.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.xplorpay.com/merchant-portal/guides/virtual-terminal/vt-settings/card-security-code-csc.md).

# Card Security Code (CSC)

The Card Security Code (CSC) tab contains settings to reduce fraud. This setting allows you to verify that the customer possesses the card by entering the 3- or 4-digit number available on the card.

{% hint style="warning" %}
The Card Security Code (CSC) is known by different names depending on the network. For example, VISA calls it the Card Verification Value (CVV2), and MasterCard calls it the Card Validation Code (CVC2).
{% endhint %}

The following table provides information of the field available in the **Card Security Code (CSC)** tab:

<table><thead><tr><th width="188" valign="top">Field Name</th><th width="375" valign="top">Description</th><th valign="top">Editable?</th></tr></thead><tbody><tr><td valign="top">Enable CSC</td><td valign="top"><p>Select the checkbox next to this field to enable the Card Security Code setting.</p><p></p><p>The Card Security Code (CSC) setting is <em>disabled</em> by default.</p><p></p><ul><li>When the Card Security Code (CSC) setting is <strong>disabled</strong>, Xplor Pay processes transactions after approval from the cardholder’s issuing bank. Xplor Pay verifies the CSC information provided by the customer with the cardholder’s issuing bank.</li><li>When the Card Security Code (CSC) setting is <strong>enabled</strong>, Xplor Pay <a href="/pages/ljfmvyhaTdaGcJVT3U3Z">voids a transaction</a> until certain CSC responses are verified, even after the transaction receives approval from the cardholder’s issuing bank.</li></ul></td><td valign="top">Editable</td></tr></tbody></table>

When you *enable* the Card Security Code (CSC) setting, the following options appear with check marks and AVS response codes:

* The CSC matches the issuing bank’s records
* The CSC does not match the issuing bank’s records
* The CSC was not processed
* The card should have a CSC, but merchant indicated it was not present
* Card issuing bank does not participate
* Unkown/No response


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