---
title: "Release v2.1.2 SAT"
slug: "oss-pcc-release-v2-1-2-sat"
updated: 2024-10-25T06:16:30Z
published: 2024-10-25T06:16:30Z
canonical: "docs.onespan.com/oss-pcc-release-v2-1-2-sat"
---

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

# Release v2.1.2 SAT

The SAT version of the Personal Certificate Client (PCC) is intended only for users in Mexico requiring a certificate for the Tax Administration Service (SAT). All other users should refer to [Personal Certificate Client Installation](/v1/docs/personal-certificate-client-installation).

### What's New

- Enhanced support for mTLS: OneSpan Sign relies on a custom service to validate SAT certificates, called the Certificate Validation Service. You must have your own Certificate Validation Service in place. To ensure secure communication with this service, we have implemented support for mutual TLS (mTLS) authentication.