1S305 - SSF kernel error: Signer error

SAP Error Message - Details

• Message type: E = Error

• Message class: 1S - Messages for SSF ("Secure Store & Forward")

• Message number: 305

• Message text: SSF kernel error: Signer error

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 1S305 - SSF kernel error: Signer error ?

  The SAP error message "1S305 SSF kernel error: Signer error" typically indicates an issue related to the Secure Store and Forward (SSF) interface in SAP, which is used for cryptographic operations such as digital signatures and encryption. This error can arise due to various reasons, including configuration issues, missing or incorrect certificates, or problems with the underlying cryptographic libraries.
  Causes:
  
  Missing or Invalid Certificates: The error may occur if the required digital certificates are missing, expired, or not properly configured in the SAP system.
  Incorrect SSF Configuration: The SSF settings in the SAP system may not be correctly configured, leading to issues in signing operations.
  Cryptographic Library Issues: Problems with the underlying cryptographic libraries (e.g., OpenSSL, SAP Cryptographic Library) can also lead to this error.
  User Authorization Issues: The user executing the signing operation may not have the necessary authorizations to perform the action.
  Network Issues: If the signing process involves communication with external systems (e.g., a certificate authority), network issues could also cause this error.
  
  Solutions:
  
  
  Check Certificates:
  
  Verify that the required certificates are installed and valid. You can check the certificate validity using transaction STRUST in SAP.
  If necessary, import new certificates or renew expired ones.
  
  
  
  Review SSF Configuration:
  
  Check the SSF configuration in transaction SSFC to ensure that the settings are correct.
  Ensure that the correct SSF interface is being used for the signing operation.
  
  
  
  Update Cryptographic Libraries:
  
  Ensure that the cryptographic libraries used by SAP are up to date. If you are using the SAP Cryptographic Library, make sure it is the latest version compatible with your SAP system.
  
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to perform signing operations. You may need to review the user's roles and authorizations.
  
  
  
  Network Configuration:
  
  If the signing process requires communication with external systems, check the network configuration to ensure that there are no connectivity issues.
  
  
  
  Review SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve the issue.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  STRUST: To manage and view certificates.
  SSFC: To configure SSF settings.
  
  
  SAP Notes: Search for specific SAP Notes related to SSF and signer errors in the SAP Support Portal.
  Documentation: Review the SAP documentation on SSF and cryptographic services for more detailed information on configuration and troubleshooting.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.