How To Fix C$823 - A communication error occurred in the RFC call for the WWI server &1

SAP Error Message - Details

• Message type: E = Error

• Message class: C$ -

• Message number: 823

• Message text: A communication error occurred in the RFC call for the WWI server &1

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 C$823 - A communication error occurred in the RFC call for the WWI server &1 ?

  The SAP error message C$823 indicates that there is a communication error occurring during a Remote Function Call (RFC) to the WWI (Word Wide Integration) server. This error can arise from various issues related to network connectivity, configuration, or server availability. Here’s a breakdown of potential causes, solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the WWI server.
  WWI Server Down: The WWI server may not be running or may have crashed.
  Configuration Errors: Incorrect configuration settings in the RFC destination for the WWI server.
  Authorization Issues: The user may not have the necessary authorizations to access the WWI server.
  Firewall Restrictions: Firewalls may be blocking the communication between the SAP system and the WWI server.
  Timeout Settings: The RFC call may be timing out due to long processing times or server overload.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the SAP system can reach the WWI server.
  Ensure that there are no network outages or issues.
  
  
  
  Verify WWI Server Status:
  
  Check if the WWI server is up and running. Restart the server if necessary.
  Look at the WWI server logs for any errors or issues.
  
  
  
  Review RFC Destination Configuration:
  
  Go to transaction SM59 in SAP and check the configuration of the RFC destination for the WWI server.
  Ensure that the connection type, target host, and service are correctly configured.
  
  
  
  Check Authorizations:
  
  Ensure that the user executing the RFC call has the necessary authorizations to access the WWI server.
  
  
  
  Firewall Settings:
  
  Check firewall settings to ensure that the required ports for RFC communication are open.
  
  
  
  Adjust Timeout Settings:
  
  If the RFC call is timing out, consider increasing the timeout settings in the RFC destination configuration.
  
  
  
  Monitor System Performance:
  
  Check the performance of both the SAP system and the WWI server to ensure they are not overloaded.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the C$823 error.
  WWI Documentation: Review the WWI documentation for specific configuration and troubleshooting guidelines.
  Logs: Analyze the application logs in both the SAP system and the WWI server for more detailed error messages.
  
  By systematically checking these areas, you should be able to identify and resolve the communication error related to the RFC call for the WWI server. If the issue persists, consider reaching out to SAP support for further assistance.