> 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/support-uk/t650/how-tos/how-to-run-the-saf-diagnostic.md).

# How to Run the SAF Diagnostic

Run the SAF Diagnostic on a T650 terminal to view and clear pending reversals.

{% hint style="info" %}
**Use this when** you need to run the SAF Diagnostic on a T650 terminal to check for and clear pending reversals.
{% endhint %}

## Run the SAF Diagnostic

{% stepper %}
{% step %}

### Open the App Launcher

Slide down on the payment screen from the top, then tap the **9-box grid** symbol at the top next to the Wi-Fi icon.

<figure><img src="https://1291794278-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0c7B1GHEHT6ss0tZUMMZ%2Fuploads%2FhGdHor6rMJz3HcWgWag6%2Fsaf-slide-down.png?alt=media" alt="Swipe down from the top" width="180"><figcaption></figcaption></figure>

<figure><img src="https://1291794278-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0c7B1GHEHT6ss0tZUMMZ%2Fuploads%2Fnpbw9S42y2bZBnTYeCsf%2Fsaf-launcher.png?alt=media" alt="App Launcher" width="180"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Open Diagnostics

Select **Diagnostics**.

<figure><img src="https://1291794278-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0c7B1GHEHT6ss0tZUMMZ%2Fuploads%2FYdjEdX3HGiFrxDuVjaZs%2Fsaf-diagnostics-menu.png?alt=media" alt="Diagnostics menu" width="180"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Open SAF Diagnostics

Select **SAF Diagnostics**.

<figure><img src="https://1291794278-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0c7B1GHEHT6ss0tZUMMZ%2Fuploads%2FwcwKylpvKFGpVkm5Z0l8%2Fsaf-diagnostics-option.png?alt=media" alt="SAF Diagnostics option" width="240"><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Delete pending reversals

Select any pending reversals listed (shown by a pending value) and select **Delete**. You'll be prompted to enter the **Admin Code** — contact the Help Desk to obtain this.

<figure><img src="https://1291794278-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0c7B1GHEHT6ss0tZUMMZ%2Fuploads%2F5YMWA0df166BcoUwlT4F%2Fsaf-delete-reversals.png?alt=media" alt="Delete pending reversals" width="180"><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}

<details>

<summary>Keywords</summary>

Also called: SAF diagnostic, store and forward diagnostic, pending reversals, clear reversals, delete reversals. Search terms: SAF, store and forward, diagnostic, pending, reversals, delete, admin code.

</details>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.verifone.com/support-uk/t650/how-tos/how-to-run-the-saf-diagnostic.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
