How To Fix 00154 - No valid license installed (no logon possible)

00154 - Overview

• Message type: E = Error

• Message class: 00 -

• Message number: 154

• Message text: No valid license installed (no logon possible)

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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00154 - Details

• The SAP error message "00154 No valid license installed (no logon possible)" indicates that the SAP system does not have a valid license installed, which prevents users from logging in. This can occur for several reasons, including:
  Causes:
  
  Expired License: The license key has expired, and the system is no longer authorized for use.
  Missing License: The license file has not been installed or is missing from the system.
  Incorrect License Configuration: The license may be incorrectly configured or not properly applied to the system.
  System Copy or Migration: If the system was copied or migrated, the license may not have been transferred correctly.
  Changes in System ID: If the system ID (SID) has changed, the existing license may no longer be valid.
  
  Solutions:
  
  
  Check License Status:
  
  Use transaction code SLICENSE in the SAP GUI to check the current license status and see if it is valid or expired.
  
  
  
  Install a New License:
  
  If the license is expired or missing, you