How To Fix 1S105 - SSF error: error in the signer list for RFC

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 105

• Message text: SSF error: error in the signer list for RFC

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message 1S105 - SSF error: error in the signer list for RFC ?

  The SAP error message 1S105 SSF error: error in the signer list for RFC typically indicates an issue with the Secure Store and Forward (SSF) configuration, particularly related to the digital signatures used in Remote Function Calls (RFC). This error can arise due to several reasons, including misconfiguration of the SSF settings, issues with the cryptographic keys, or problems with the digital certificates.
  Causes:
  
  Invalid or Missing Signer Certificates: The signer list may not contain valid certificates or may be missing entirely.
  
  Configuration Issues: Incorrect configuration of the SSF settings in the SAP system.
  Expired Certificates: The certificates used for signing may have expired.
  Key Storage Issues: Problems with the key storage or access rights to the key storage.
  Network Issues: Connectivity problems that prevent the system from accessing the necessary signing services.
  
  Solutions:
  
  
  Check SSF Configuration:
  
  Go to transaction SSFC (SSF Configuration) and verify the settings.
  Ensure that the correct SSF library is being used and that the configuration