> ## 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.

# Pre-Authorization (Israel)

Tweezercomm's pre-authorization transactions are processed, authorized, and either settled or canceled based on the response from the payment server. This process also includes a resilience mechanism for handling errors.

## Transaction Flow

To understand the pre-authorization transaction flow, consider the following sequence of events:

<Frame>
  <img src="https://mintcdn.com/nayax-44d6e37b/gp-udlFbAMEECcYg/images/docs/tweezercomm-pre-authorization-israel/image1.png?fit=max&auto=format&n=gp-udlFbAMEECcYg&q=85&s=40203e7c36fdba2fb7d21d15a985a50f" width="1759" height="1155" data-path="images/docs/tweezercomm-pre-authorization-israel/image1.png" />
</Frame>

Here's a breakdown of each step:

1. The client application (POS) sends a [`doTransaction()`](/docs/integrate-pos-device/tweezercomm/israel-payment-methods/dotransaction-ashrait) request to the Nayax Device with a parameter (`Trancode=2`) to initiate a pre-authorization.
2. The cardholder inserts, shows, or swipes their card.
3. The Nayax Device communicates with the payment server to perform the pre-authorization.
4. The payment server responds, and the Nayax Device relays the `Authorization result` back to the POS.
5. At a later time, the POS sends another [`doTransaction()`](/docs/integrate-pos-device/tweezercomm/israel-payment-methods/dotransaction-ashrait) request, this time with a parameter (`Trancode=3`) to initiate the completion of the pre-authorized transaction.
6. The Nayax Device communicates with the payment server to complete the transaction.
7. The payment server responds with a `Completion result`, which the Nayax Device sends back to the POS.
8. At the end of the day, the POS sends a [`doPeriodic()`](/docs/integrate-pos-device/tweezercomm/israel-payment-methods/doperiodic) request. The Nayax Device communicates with the payment server to perform the settlement of the day's transactions and sends a [`doPeriodic()`](/docs/integrate-pos-device/tweezercomm/israel-payment-methods/doperiodic) result back to the POS.

## See Also

<Columns cols={2}>
  <Card icon="link" title="Regular Transaction" href="/docs/integrate-pos-device/tweezercomm/israel-payment-flows/single-phase-transaction" arrow />

  <Card icon="link" title="Two Phases Transaction" href="/docs/integrate-pos-device/tweezercomm/israel-payment-flows/2-phase-transaction" arrow />

  <Card icon="link" title="Deferred Payment" href="/docs/integrate-pos-device/tweezercomm/israel-payment-flows/tweezercomm-deferred-payment" arrow />

  <Card icon="link" title="Split Transaction" href="/docs/integrate-pos-device/tweezercomm/israel-payment-flows/tweezercomm-split-transaction" arrow />
</Columns>