How To Fix 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.,