"SSIS6 UPD" appears to be an abbreviated reference combining:

Taken together, "SSIS6 UPD" most plausibly denotes an update/patch (UPD) for a versioned SSIS product or an internal release named “SSIS6.” Below is a comprehensive, well-structured explanation covering possible meanings, typical contents, installation guidance, troubleshooting, and best practices.


Upgrade happens via:

During upgrade:

  • After success, writes PackageFormatVersion = 6 and adds ssis6 upd to VersionComments.

  • Cause: Visual Studio or SSDT on your development machine is out of date. Solution: Download the latest SSDT for Visual Studio 2019 (which supports SSIS 2016 project version 6). Ensure your project target version is set to SQL Server 2016.