How To Fix SNC002 - SNC mechanism &1 not active

SAP Error Message - Details

• Message type: E = Error

• Message class: SNC - Secure Network Communication, SNC

• Message number: 002

• Message text: SNC mechanism &1 not active

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 SNC002 - SNC mechanism &1 not active ?

  The SAP error message "SNC002: SNC mechanism &1 not active" typically indicates that the Secure Network Communications (SNC) mechanism specified is not currently active or configured correctly in your SAP system. This error can occur in various scenarios, particularly when trying to establish a secure connection between SAP systems or between an SAP system and an external application.
  Cause:
  
  SNC Not Configured: The SNC mechanism specified in the configuration is not set up or activated in the SAP system.
  Incorrect SNC Library: The SNC library specified in the SAP profile parameters is either missing or incorrectly configured.
  SNC Parameters: The parameters related to SNC in the instance profile may not be set correctly.
  Network Issues: There may be network issues preventing the SNC mechanism from being activated.
  Authorization Issues: The user may not have the necessary authorizations to use the SNC mechanism.
  
  Solution:
  
  
  Check SNC Configuration:
  
  Go to transaction RZ10 to check the instance profile parameters.
  Ensure that the SNC parameters are correctly set. Key parameters include:
  
  snc/enable (should be set to 1 to enable SNC)
  snc/gssapi_lib (should point to the correct GSSAPI library)
  snc/identity/as (should be set to the correct SNC identity)
  
  
  
  
  
  Activate SNC:
  
  If SNC is not activated, you may need to activate it in the SAP system. This can involve setting the appropriate parameters in the instance profile and restarting the SAP instance.
  
  
  
  Verify SNC Library:
  
  Ensure that the SNC library is installed and accessible by the SAP system. Check the path specified in the snc/gssapi_lib parameter.
  
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to use SNC. This may involve checking roles and profiles assigned to the user.
  
  
  
  Network Configuration:
  
  Verify that there are no network issues preventing the SNC mechanism from functioning. This may involve checking firewalls, network settings, and connectivity between systems.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for detailed instructions on configuring SNC. The SAP Help Portal provides comprehensive guides on SNC setup.
  
  
  
  Related Information:
  
  SNC Overview: Secure Network Communications (SNC) is a security protocol that provides encryption and authentication for SAP communications.
  SAP Notes: Check SAP Notes related to SNC for any known issues or additional troubleshooting steps.
  SAP Community: Engage with the SAP Community for insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.