Stack XML also contains add-on uninstallations

What causes this issue?

The stack XML contains both information about installing or maintaining
software components and information about uninstalling software
components. This is not supported by Add-On Installation Tool.

System Response

The stack XML cannot be used.

How to fix this error?

Use Software Update Manager (SUM) to update the system with this stack
XML.

Error message extract from SAP system. Copyright SAP SE.