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SAP license verification fails after upgrade to SLES12 SP5 due to system UUID change

This document (000019647) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 for SAP


After an upgrade to SLES12 SP5, alphabetic characters in /sys/devices/virtual/dmi/id/product_uuid are switched to lower-case whereas previous SLES versions use upper-case characters in the UUID string. 
This may impact case-sensitive tools that read this UUID, such as SAP license registration/verification checks.


The problematic patch was reverted in the SLES 12 SP5 kernel 4.12.14-122.26.1 (released on 19 June 2020).

The kernel 4.12.14-122.26.1 or any newer kernels for SLES 12 SP5 contain the following change:
* Mon Jun 08 2020
- Delete patches.suse/firmware-dmi_scan-use-lowercase-letters-for-uuid.patch
  The letter case change breaks compatibility with the SAP license
  generator and possibly others. It was drawn into SLE12-SP5 through
  SLE15 while it wasn't meant to go there, so remove it now.
- commit 726940c

If you use the kernel 4.12.14-122.26.1 or any newer kernels for SLES 12 SP5, you should not encounter the described issue.


A patch was merged into the SLES12 SP5 kernels in order to comply with RFC4122.


Reported to Engineering

Additional Information

This change will not be reverted in SLES15+ as this is considered the new standard.

A new SAP note will be created at a later time which addresses this problem.

Relevant RFC:


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  • Document ID:000019647
  • Creation Date: 16-Jun-2020
  • Modified Date:16-Jul-2021
    • SUSE Linux Enterprise Server
    • SUSE Linux Enterprise Server for SAP Applications

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