00177 - Logon refused (valid license not installed)

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 177

• Message text: Logon refused (valid license not installed)

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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Smart SAP Assistant

• What is the cause and solution for SAP error message 00177 - Logon refused (valid license not installed) ?

  The SAP error message "00177 Logon refused (valid license not installed)" indicates that the SAP system is unable to authenticate the user because it does not have a valid license installed. This can occur for several reasons, including the expiration of the current license, the absence of a license, or issues with the license configuration.
  Causes:
  
  Expired License: The current license has expired and needs to be renewed.
  Missing License: No license has been installed on the SAP system.
  Incorrect License Configuration: The license may be installed incorrectly or not recognized by the system.
  System Changes: Changes in the system configuration or updates that affect the license validity.
  User Restrictions: The user may be trying to log in to a system that is not covered by the existing license.
  
  Solutions:
  
  
  Check License Status:
  
  Use transaction code SLICENSE in the SAP GUI to check the current license status and details.
  Verify if the license is valid, expired, or missing.
  
  
  
  Install a New License:
  
  If the license has expired or is missing, you will need to obtain a new license from SAP.
  Once you have the new license, you can install it using transaction code SLICENSE. Follow the prompts to upload the new license file.
  
  
  
  Contact SAP Support:
  
  If you are unsure about the license status or how to obtain a new license, contact SAP support for assistance.
  
  
  
  Review System Configuration:
  
  Ensure that the system configuration has not changed in a way that affects the license. This includes checking for any recent upgrades or changes to the system landscape.
  
  
  
  User Access:
  
  Ensure that the user trying to log in has the appropriate access rights and is attempting to log in to the correct system.
  
  
  
  Related Information:
  
  License Types: SAP licenses can vary based on the type of system (e.g., development, production) and the number of users. Make sure you are aware of the type of license required for your specific use case.
  License Key: The license key is typically provided by SAP and is tied to the specific system ID (SID) of your SAP instance.
  Documentation: Refer to SAP's official documentation for detailed instructions on managing licenses and understanding the licensing model.
  
  By following these steps, you should be able to resolve the "Logon refused (valid license not installed)" error and regain access to the SAP system.