How To Fix GW727 - SNC required for these connections

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 727

• Message text: SNC required for these connections

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message GW727 - SNC required for these connections ?

  The SAP error message GW727 indicates that Secure Network Communications (SNC) is required for the connections you are trying to establish, but it is not configured or enabled properly. This error typically occurs in scenarios where secure communication is mandated, such as when connecting to an SAP system that has SNC enabled.
  Cause:
  
  SNC Not Configured: The SAP system you are trying to connect to has SNC enabled, but your client or middleware does not have SNC configured.
  SNC Library Missing: The required SNC library (e.g., SAP Cryptographic Library) is not installed or not accessible.
  Incorrect SNC Parameters: The SNC parameters in the SAP system or the client configuration may be incorrect.
  Network Security Policies: Organizational policies may require SNC for all connections, and the client is not compliant.
  
  Solution:
  
  
  Configure SNC on the Client:
  
  Ensure that the client (SAP GUI, middleware, etc.) is configured to use SNC. This typically involves setting the SNC parameters in the SAP GUI or the relevant configuration files.
  You may need to specify the SNC name and the path to the SNC library.
  
  
  
  Install the SAP Cryptographic Library:
  
  If the SAP Cryptographic Library is not installed, download and install it from the SAP Service Marketplace or the SAP Support Portal.
  Ensure that the library is correctly referenced in your environment variables.
  
  
  
  Check SNC Parameters:
  
  Verify the SNC parameters in the SAP system (transaction RZ10 for profile parameters) and ensure they are correctly set.
  Common parameters include snc/enable, snc/identity/as, and snc/identity/peer.
  
  
  
  Test the Connection:
  
  After configuring SNC, test the connection again to see if the error persists.
  Use transaction SM59 to test RFC connections and ensure that SNC is working as expected.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for detailed steps on configuring SNC for your specific version and environment.
  
  
  
  Related Information:
  
  SNC Overview: Secure Network Communications (SNC) is a security protocol that provides encryption and authentication for SAP communications.
  SNC Configuration Guide: SAP provides detailed guides on how to configure SNC for various environments, including SAP GUI, RFC, and other interfaces.
  SAP Notes: Check SAP Notes related to SNC for any known issues or additional configuration steps that may be required.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis team or SAP support for further assistance.