How To Fix SNC727 - SNC required for these connections

SAP Error Message - Details

• Message type: E = Error

• Message class: SNC - Secure Network Communication, SNC

• Message number: 727

• Message text: SNC required for these connections

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 SNC727 - SNC required for these connections ?

  The SAP error message SNC727 indicates that Secure Network Communications (SNC) is required for the connection you are trying to establish, but it is not properly configured or enabled. This typically occurs in environments where security is a priority, and SNC is used to encrypt the communication between SAP systems or between an SAP system and a client.
  Cause:
  
  SNC Not Configured: The SAP system or client is not configured to use SNC.
  SNC Library Missing: The required SNC library (e.g., SAP Cryptographic Library) is not installed or not accessible.
  SNC Parameters Not Set: The necessary SNC parameters in the SAP system profile or client configuration are not set correctly.
  SNC Name Mismatch: The SNC name configured in the SAP system does not match the SNC name expected by the client or the other SAP system.
  Network Issues: There may be network issues preventing the establishment of an SNC connection.
  
  Solution:
  
  
  Check SNC Configuration:
  
  Ensure that SNC is enabled in the SAP system. You can check this in the SAP GUI by navigating to Transaction RZ10 and reviewing the instance profile parameters.
  Look for parameters like snc/enable and snc/identity/as to ensure they are set correctly.
  
  
  
  Install Required Libraries:
  
  Make sure that the SAP Cryptographic Library is installed on the server and client machines. This library is necessary for SNC to function.
  
  
  
  Set SNC Parameters:
  
  In the SAP system, ensure that the SNC parameters are correctly set. This includes the SNC name and any other relevant settings.
  The SNC name should be in the format p:CN=<CommonName> or p:CN=<CommonName>,O=<Organization>,C=<Country>.
  
  
  
  Verify SNC Name:
  
  Check that the SNC name configured in the SAP system matches the SNC name used by the client or the other SAP system. This can be done by comparing the SNC names in the respective configurations.
  
  
  
  Network Configuration:
  
  Ensure that there are no network issues preventing the connection. Check firewalls, routing, and other network settings.
  
  
  
  Testing the Connection:
  
  After making the necessary changes, test the connection again to see if the error persists.
  
  
  
  Related Information:
  
  Documentation: Refer to the official SAP documentation on SNC for detailed configuration steps and requirements.
  SAP Notes: Check SAP Notes related to SNC for any known issues or additional troubleshooting steps.
  Security Policies: Ensure that your organization's security policies align with the use of SNC and that all necessary approvals are in place for its implementation.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis team or SAP support for further assistance.