# Configure custom fields for transactions with Roc Terminal+ on a device

Roc Terminal+ web portal

You can use the Roc Terminal+ web portal to add custom fields to a sale to collect additional information, for example, invoice number. The information from custom fields appears on receipts and in the transaction history in the web portal.

Custom fields capture only the information that you enter during a sale. Roc Terminal+ doesn’t process or track the information, for example, you can’t use custom fields to track tips by server ID. To track tips for individual staff members, go to [Set up tip reporting for your staff members](https://support.payroc.com/en-US/core-products/roc-terminal-plus/web-portal-device-configuration/set-up-tip-reporting-for-your-staff-members.md).

Include the following information when you add a custom field:

| Field | Description |
| --- | --- |
| Display Text | Name of the custom field. |
| Text Format | Format of the input value. From the drop-down menu, select one of the following options:  - **AlphaNumeric** - Allow letters and numbers. - **Numeric** - Allow only numbers. |
| Min Length | Minimum number of characters that you must enter in the field. Enter **0** if the field can remain empty. |
| Max Length | Maximum number of characters that you must enter in the field. Enter a value of up to **16**. |
| Mandatory | Indicates whether the field is mandatory. From the dropdown menu, select one of the following options  - **Yes** - You must enter a value for the custom field when you run a sale. - **No** - You don't need to enter a value for the custom field when you run a sale. |
| Prompt Order | Order that we display the custom fields. To rearrange the order, select![Drag handle](https://support.payroc.com/assets/eae9faf9ae4650a6.png)and drag the field to the position that you want. |
| Duplicate Check | Indicates if you want to accept duplicate values:  - Select the checkbox to reject duplicate values. - Clear the checkbox to accept duplicate values. |

## Add a custom field 

> **Note:** You must set up custom fields for each device and virtual terminal separately.

1. Log in to [https://terminalplus.rocpos.com/login](https://terminalplus.rocpos.com/login).
2. On the side menu, select **Device Management**.
3. (Optional) Search for your device or virtual terminal using one of the following criteria:
   - Endpoint identifier (EPI) of your device
   - Serial number of your device
   - Model number of your device
   - Doing Business As (DBA) name associated with your device or virtual terminal
   - Store name associated with your device or virtual terminal
4. Select the EPI of your device or virtual terminal.
5. Select **EDIT PARAMETERS**.
6. Select the **Data Collection** tab.

![Data Collection tab highlighted, with Additional Input enabled and a custom field row](https://support.payroc.com/assets/ad4f0a3c6c02386e.png)

1. Turn on **Additional Input**.
2. For each custom field, select **ADD ADDITIONAL INPUT** , and then enter the details.
3. Select **SAVE**.

If you add a custom field to a device, you must download updates to your device. For more information about how to download updates, go to one of the following articles:

- If you are using a physical payment device, for example, Newland N950, N950S, or X800, go to one of the following articles:
   - If your payment device has a single-MID configuration, go to [Download a parameter update to a device](https://support.payroc.com/en-US/core-products/roc-terminal-plus/devices/newland-n950/download-a-parameter-update-to-a-device.md).
   - If your payment device has a multi-MID configuration, go to [Download a parameter update to a multi-MID device](https://support.payroc.com/en-US/core-products/roc-terminal-plus/devices/newland-n950/download-a-parameter-update-to-a-multi-mid-device.md).
- If you are using the Roc Terminal+ mobile app on your phone or tablet, go to [Download a parameter update to the Roc Terminal+ mobile app](https://support.payroc.com/en-US/core-products/roc-terminal-plus/mobile-app/download-a-parameter-update-to-the-roc-terminal-mobile-app.md).

## Related articles

- [Set up tips for Roc Terminal+ on a device](https://support.payroc.com/en-US/core-products/roc-terminal-plus/web-portal-device-configuration/set-up-tips-for-your-device.md)
- [Run a referenced refund on the Roc Services mobile app](https://support.payroc.com/en-US/core-products/roc-services/mobile-app/run-a-referenced-refund-on-the-roc-services-mobile-app.md)
- [Set up tip reporting for your staff members on a Roc Terminal+ device](https://support.payroc.com/en-US/core-products/roc-terminal-plus/web-portal-device-configuration/set-up-tip-reporting-for-your-staff-members.md)
- [Edit, duplicate, or delete an inventory item](https://support.payroc.com/en-US/core-products/roc-terminal-plus/web-portal-device-configuration/edit-duplicate-or-delete-an-inventory-item.md)

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From [Payroc Support](https://support.payroc.com/en-US/core-products/roc-terminal-plus/web-portal-device-configuration/add-custom-fields-to-your-transactions). Every page is listed in [llms.txt](https://support.payroc.com/llms.txt).