00179 - Logon not possible (error in license check)

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 179

• Message text: Logon not possible (error in license check)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00179 - Logon not possible (error in license check) ?

  The SAP error message "00179 Logon not possible (error in license check)" typically indicates that there is an issue with the SAP system's license. This error can occur for several reasons, and understanding the cause is essential for resolving the issue. Here are some common causes, solutions, and related information:
  Causes:
  
  
  Expired License: The most common reason for this error is that the SAP license has expired. Each SAP system requires a valid license to operate, and if the license is not renewed, the system will prevent logon.
  
  
  License Key Issues: There may be issues with the license key itself, such as incorrect installation or configuration.
  
  
  System Configuration Changes: Changes in the system configuration or updates may lead to discrepancies in the license check.
  
  
  Multiple Instances: If there are multiple instances of SAP running on the same server, there may be conflicts with the license checks.
  
  
  Technical Issues: There could be underlying technical issues with the SAP system that are preventing the license check from being performed correctly.
  
  
  Solutions:
  
  
  Check License Validity:
  
  Go to transaction code SLICENSE in the SAP GUI.
  Check the status of the license and see if it is expired or nearing expiration.
  
  
  
  Renew License:
  
  If the license is expired, contact your SAP account representative to obtain a new license key.
  Once you have the new license key, you can upload it using the SLICENSE transaction.
  
  
  
  Verify License Key:
  
  Ensure that the license key is correctly entered and corresponds to the system's SID (System ID) and other parameters.
  
  
  
  Check System Configuration:
  
  Review any recent changes made to the system configuration that might affect the license check.
  
  
  
  Restart the System:
  
  Sometimes, simply restarting the SAP system can resolve temporary issues related to the license check.
  
  
  
  Consult SAP Support:
  
  If the issue persists after checking the license and making necessary changes, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SLICENSE for license management and SM51 for checking active instances.
  Documentation: Review SAP documentation regarding license management and compliance to ensure that your organization adheres to licensing agreements.
  SAP Notes: Check SAP Notes for any known issues or patches related to license checks that may apply to your version of SAP.
  
  By following these steps, you should be able to identify and resolve the issue related to the "Logon not possible (error in license check)" message in SAP.