Software Update Manager (SUM) Toolbox is a new ABAP-based transaction that allows you to run certain tools and reports related to the various scenarios offered by Software Update Manager. Especially, tools required for downtime-optimized approaches are in focus of SUM Toolbox. Click here to get an overview of all downtime-optimized approaches. In the past, the tools offered now in SUM Toolbox were mainly shipped along with separate SAP Notes having Z-reports attached which needed to be created manually in the system. Providing now a central entry point via transaction code STBX eases the way to leverage these tools.

Check SAP Note 3092738 - Software Update Manager Toolbox - Central SAP Note.
In this SAP Note the available version of the SUM Toolbox are listed.
SUM Toolbox provides several tools to support different SUM scenarios. Especially when performing a downtime Optimized Conversion (DoC) or a Downtime optimized DMO (DoDMO) these tools are essential.
Depending on the release of the SAP system, these tools are provided:
- Export table statistics into XML file to be used in Impact Analysis
- Lock analysis of productive system to identify uncritical intervals for ZDO Smart Switch
- Export of table SUM table classification data
- Selection of uptime tables for downtime optimized DMO
- The Zero Downtime Option (ZDO) of Software Update Manager (SUM) has some prerequisites in order to be successful. Some of these prerequisites can be checked with this tool even before SUM tool is started
- Impact analysis by comparing Production Statistical data and sandbox SUM Classification data before production run
- Selection of uptime XCLAs by comparing Production Statistical data and XCLA metadata file
- Check for inactive DDIC objects before an Upgrade
- Object Catalog (TADIR) and Software Component Consistency Check before an Upgrade
- Open correction requests which might prevent an upgrade
- Check for aborted update tasks and Business Warehouse queues
- Check for aborted data dictionary conversions
For more information about the Software Update Manager (SUM) Toolbox, see in the SAP Community the blog https://blogs.sap.com/2021/12/10/software-update-manager-toolbox-is-available-now/.