> 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-nordics/t650-two-piece/how-tos/how-to-run-the-saf-diagnostic.md).
# How to Run the SAF Diagnostic
Run the SAF Diagnostic on a T650 Two-Piece (T650C) to view and clear pending reversals.
{% hint style="info" %}
**Use this when** you need to run the SAF Diagnostic on your T650C to check for and clear pending reversals.
{% endhint %}
You run the SAF Diagnostic on the **T650C**. It covers all payments taken on the P400 too.
## Run the SAF Diagnostic
{% stepper %}
{% step %}
### Open the App Launcher
On the T650C, 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.
{% endstep %}
{% step %}
### Open Diagnostics
Select **Diagnostics**.
{% endstep %}
{% step %}
### Open SAF Diagnostics
Select **SAF Diagnostics**.
{% 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 Helpdesk to obtain this.
{% endstep %}
{% endstepper %}
Keywords
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.
---
# 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 by asking a question.
Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:
```
GET https://docs.verifone.com/support-nordics/t650-two-piece/how-tos/how-to-run-the-saf-diagnostic.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.
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.
