3671981 - Prerequisites fail when applying 4.3 patches after 2025 install / uninstall

• Installation of a 4.3 patch is failing at the prerequisites screen, eg:
  Failed: Disk Space Check (Critical)
          Information: Please make sure that the necessary disk space is available to proceed with the installation. For more information, see
  https://apps.support.sap.com/sap/support/pam.
  Failed: Operating system patch level (Critical)
          Information: [CheckPatchLevelFailReason]
  Failed: Minimum support package version (Critical)
          Information: This update is for SAP BusinessObjects BI platform 4.3 SP4, which was not found on the system. You must install it before this
  installation can continue.
  Failed: Updates are applicable (Optional)
          Information: SAP BusinessObjects BI platform 4 is a later version than this update. Do not continue with this update.
  Failed: Disk space in /var (Critical)
          Information: The /var folder does not have enough free disk space. You must make available 20 MB or more of disk space before the installation
  can continue.
  Succeeded: Information Steward and Data Services compatibility (Optional)
  Succeeded: BI platform server 4 installed (Critical)
  Succeeded: Root user rights (Critical)
  
  
• This happened after installing / uninstalling BI 2025
  
  
• Installation logs show errors eg:
  Error: Couldn't open library '<INSTALLMEDIADIR>/dunit/product.boe64one.patch-4.3.4.14-core-32/actions/libmultiplatformactions.so'.  Error message: <INSTALLMEDIADIR>/dunit/product.boe64one.patch-4.3.4.14-core-32/actions/libmultiplatformactions.so: wrong ELF class: ELFCLASS32

• SAP BusinessObjects Business Intelligence (BI) Platform 4.x / 2025
• Windows
• Linux / Unix 

KBA , BI-BIP-INS , Installation, Updates, Upgrade, Patching , Problem