> ## Documentation Index
> Fetch the complete documentation index at: https://devzone.nayax.com/llms.txt
> Use this file to discover all available pages before exploring further.

# External Settlement Configuration

> Configure a machine in Nayax Core to support Spark External Settlement, where a server settles or cancels a terminal-authorized transaction.

The settings on this page prepare a machine for Spark External Settlement, where your
server completes or cancels a transaction that was authorized directly on the terminal.
Most attribute groups need no change to support this feature.

## MDB

The **MDB Flags** setting tells the server which payment flow the device supports:

* **Pre-Authorization** is used when the transaction starts before the consumer chooses
  a product or service and before the final amount is known. Set **MDB Flags** to
  **\* Flags Disabled**.
* **Pre-Selection** is the flow used when the price is known when the card is
  presented. Set **MDB Flags** to **02 PreSelection Enabled**.

<Frame>
  <img src="https://mintcdn.com/nayax-44d6e37b/-tgsW2FUlNC3JDl8/images/docs/spark-machine-configuration/mdb-flags-disabled.png?fit=max&auto=format&n=-tgsW2FUlNC3JDl8&q=85&s=4b718ea32c773901ab93524a6437f07d" alt="MDB Flags set to Flags Disabled for the Pre-Authorization flow" width="697" height="141" data-path="images/docs/spark-machine-configuration/mdb-flags-disabled.png" />
</Frame>

## VPOS Touch

The **VAS configurations** setting is optional for External Settlement. You can add an
indication that the machine performs Spark External Settlement. This is not required
for the flow to work and is only for management purposes.

<Warning>
  Spark External Settlement cannot coexist with any other Spark flow (Remote Start,
  Device Start, or Device Stop) on the same machine.
</Warning>

After you finish, click **Save** to store the configuration.

## Configuration Summary

Use this table as a quick reference for the External Settlement settings:

| Group      | Property           | Value                                                                  |
| :--------- | :----------------- | :--------------------------------------------------------------------- |
| MDB        | MDB Flags          | Pre-Authorization: Flags Disabled. Pre-Selection: PreSelection Enabled |
| VPOS Touch | VAS configurations | Optional: Spark External Settlement                                    |

## Next Steps

<CardGroup cols={2}>
  <Card title="External Settlement" icon="money-check" href="/docs/integrate-pos-device/spark/payment-flows/external-settlement">
    See how the External Settlement flow works at the API level.
  </Card>

  <Card title="External Cancel" icon="ban" href="/docs/integrate-pos-device/spark/payment-flows/external-cancel">
    Learn how to release captured funds when no service is delivered.
  </Card>
</CardGroup>