How To Fix ISLM_API063 - Supplied signature and existing signature are not consistent

SAP Error Message - Details

• Message type: E = Error

• Message class: ISLM_API - API Messages

• Message number: 063

• Message text: Supplied signature and existing signature are not consistent

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 ISLM_API063 - Supplied signature and existing signature are not consistent ?

  The SAP error message ISLM_API063 indicates that there is a mismatch between the supplied signature and the existing signature in the system. This error typically occurs in the context of SAP's License Management, particularly when dealing with license keys or digital signatures associated with software components.
  Cause:
  
  
  Signature Mismatch: The most common cause of this error is that the signature provided during a transaction does not match the signature that is already stored in the system. This can happen if:
  
  The license key has been modified or corrupted.
  The system has been upgraded or patched, and the signatures are no longer valid.
  There is an issue with the configuration or installation of the software.
  
  
  
  Incorrect License Key: If an incorrect or outdated license key is being used, it may not match the expected signature.
  
  
  System Changes: Changes in the system configuration, such as moving to a new server or changing the database, can also lead to signature inconsistencies.
  
  
  Solution:
  
  
  Verify License Key: Ensure that the correct license key is being used. Check with your SAP account representative or the SAP support portal to confirm that you have the right license for your system.
  
  
  Reapply License: If you suspect that the license key has been corrupted, try reapplying the license key. This can often resolve signature mismatches.
  
  
  Check System Configuration: Review any recent changes made to the system configuration or upgrades. Ensure that all components are compatible and that the system is properly configured.
  
  
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide guidance specific to your system and help troubleshoot the issue further.
  
  
  System Logs: Check the system logs for any additional error messages or warnings that may provide more context about the issue.
  
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP Notes often contain solutions or workarounds for known issues.
  Documentation: Review the SAP documentation related to License Management and digital signatures to understand how they work and how to manage them effectively.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues. They can provide insights and solutions based on their experiences.
  
  By following these steps, you should be able to identify the cause of the ISLM_API063 error and implement a solution to resolve it.