How To Fix S_CMI_CCV001 - RFC Communication failure; &1 &2 &3 &4

SAP Error Message - Details

• Message type: E = Error

• Message class: S_CMI_CCV - Message Class for Cross-System Configutration Verification

• Message number: 001

• Message text: RFC Communication failure; &1 &2 &3 &4

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 S_CMI_CCV001 - RFC Communication failure; &1 &2 &3 &4 ?

  The SAP error message S_CMI_CCV001 indicates an RFC (Remote Function Call) communication failure. This error can occur for various reasons when trying to establish a connection between SAP systems or between an SAP system and an external system. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP systems or between the SAP system and the external system.
  Configuration Errors: Incorrect RFC destination configuration in the SAP system (transaction code SM59).
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  System Availability: The target system may be down or not reachable.
  Firewall Restrictions: Firewalls may be blocking the required ports for RFC communication.
  SAP Gateway Issues: Problems with the SAP Gateway service on either the source or target system.
  Timeout Settings: The timeout settings for the RFC connection may be too low, causing the connection to fail before it can be established.
  
  Solutions:
  
  Check Network Connectivity: Use tools like ping or traceroute to verify that the systems can communicate over the network.
  Verify RFC Destination:
  
  Go to transaction SM59 and check the configuration of the RFC destination.
  Test the connection using the "Connection Test" option in SM59.
  
  
  Check User Authorizations: Ensure that the user ID used for the RFC connection has the necessary authorizations in both the source and target systems.
  System Status: Verify that the target system is up and running. Check the system logs for any errors.
  Firewall Configuration: Ensure that the necessary ports (usually TCP port 3200 for SAP) are open and not blocked by firewalls.
  SAP Gateway Configuration: Check the SAP Gateway settings and ensure that the gateway is running properly.
  Adjust Timeout Settings: If necessary, increase the timeout settings in the RFC destination configuration.
  
  Related Information:
  
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SMGW: SAP Gateway Monitor
  SICF: HTTP Service Hierarchy Maintenance
  
  
  Logs and Traces:
  
  Check the system logs (SM21) and developer traces (ST22) for any additional error messages that may provide more context.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC communication failures.
  
  If the issue persists after checking the above points, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.