How To Fix SPXN201 - Signature is incompatible

SAP Error Message - Details

• Message type: E = Error

• Message class: SPXN - Proxy Generation

• Message number: 201

• Message text: Signature is incompatible

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 SPXN201 - Signature is incompatible ?

  The SAP error message SPXN201, which states "Signature is incompatible," typically occurs in the context of digital signatures or when dealing with secure communications in SAP systems. This error can arise due to various reasons, including issues with the digital certificate, mismatched cryptographic algorithms, or problems with the configuration of the secure communication settings.
  Causes:
  
  Incompatible Cryptographic Algorithms: The signature may be created using a cryptographic algorithm that is not supported or recognized by the receiving system.
  Certificate Issues: The digital certificate used for signing may be expired, revoked, or not properly installed in the SAP system.
  Configuration Problems: There may be misconfigurations in the settings related to secure communications (e.g., SSL/TLS settings).
  Version Mismatch: The version of the software or libraries used for signing may not be compatible with the version expected by the SAP system.
  Key Length Issues: The key length used for the signature may not meet the security requirements of the SAP system.
  
  Solutions:
  
  
  Check Digital Certificates:
  
  Ensure that the digital certificate used for signing is valid, not expired, and properly installed in the SAP system.
  If necessary, renew or replace the certificate.
  
  
  
  Verify Cryptographic Algorithms:
  
  Check the algorithms used for signing and ensure they are compatible with the SAP system's requirements.
  Update the signing process to use supported algorithms.
  
  
  
  Review Configuration Settings:
  
  Review the configuration settings for secure communications in the SAP system, including SSL/TLS settings.
  Ensure that the settings are correctly configured to support the required cryptographic protocols.
  
  
  
  Update Software:
  
  Ensure that the SAP system and any related libraries or components are up to date and compatible with each other.
  Apply any relevant patches or updates that may address compatibility issues.
  
  
  
  Consult SAP Documentation:
  
  Refer to SAP's official documentation or support notes related to digital signatures and secure communications for specific guidance on resolving this error.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance. Provide them with detailed information about the error and the context in which it occurs.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Security Settings: Familiarize yourself with the security settings in your SAP system, especially those related to digital signatures and secure communications.
  Testing: If possible, test the signing process in a development or test environment to isolate the issue without affecting production systems.
  
  By following these steps, you should be able to identify and resolve the cause of the SPXN201 error in your SAP system.