How To Fix VIRT303 - CPU Serial No.

SAP Error Message - Details

• Message type: E = Error

• Message class: VIRT - Virtualization Monitoring

• Message number: 303

• Message text: CPU Serial No.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message VIRT303 - CPU Serial No. ?

  The SAP error message VIRT303, which refers to "CPU Serial No.," typically occurs in the context of SAP systems running on virtual machines. This error is often related to the licensing of the SAP system, particularly when the system detects a change in the underlying hardware or virtual environment.
  Cause:
  
  Hardware Change: The CPU serial number is used by SAP for licensing purposes. If the virtual machine's CPU configuration changes (e.g., moving to a different host, changes in the virtual CPU settings), the CPU serial number may change, leading to this error.
  Virtualization Environment: Some virtualization platforms may not expose the CPU serial number correctly, or it may be altered during VM migration or cloning.
  License Issues: The error can also indicate that the current hardware configuration does not match the licensed configuration.
  
  Solution:
  
  Check Virtual Machine Configuration: Ensure that the virtual machine's CPU settings have not changed. If they have, revert to the previous configuration if possible.
  Re-register the System: If the CPU serial number has changed, you may need to re-register your SAP system with SAP to obtain a new license key that matches the new configuration.
  Contact SAP Support: If you are unable to resolve the issue, it is advisable to contact SAP support for assistance. They can provide guidance on how to handle licensing issues related to hardware changes.
  Use SAP License Management Tools: Utilize tools provided by SAP for license management to check the current status of your licenses and ensure compliance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to licensing and virtual environments. SAP frequently updates their documentation and notes regarding common issues and resolutions.
  Documentation: Review the SAP documentation for your specific version and environment, as there may be specific guidelines for handling virtualized environments.
  Virtualization Platform Documentation: Consult the documentation for your virtualization platform (e.g., VMware, Hyper-V) to understand how it handles CPU serial numbers and licensing.
  
  Preventive Measures:
  
  Avoid Frequent Changes: Try to minimize changes to the virtual machine's CPU configuration unless necessary.
  Regular Backups: Maintain regular backups of your SAP system and configurations to facilitate recovery in case of issues.
  Monitoring: Implement monitoring tools to track changes in the virtual environment that could affect the SAP system.
  
  By following these steps, you should be able to address the VIRT303 error and ensure that your SAP system remains compliant with licensing requirements.