How To Fix CPE303 - RFC communication error occured during CPE call

SAP Error Message - Details

• Message type: E = Error

• Message class: CPE - Commodity Pricing Engine

• Message number: 303

• Message text: RFC communication error occured during CPE call

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CPE303 - RFC communication error occured during CPE call ?

  The SAP error message CPE303, which indicates that an RFC (Remote Function Call) communication error occurred during a CPE (Central Process Engine) call, can arise from various issues related to network connectivity, configuration, or system settings. Here’s a breakdown of potential causes, solutions, and related information:
  Causes:
  
  Network Issues: Problems with the network connection between the systems involved in the RFC call can lead to communication errors.
  RFC Destination Configuration: Incorrect or incomplete configuration of the RFC destination in the SAP system can cause failures in communication.
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations to execute the function.
  System Load: High load on the SAP system or the target system can lead to timeouts or dropped connections.
  Firewall or Security Settings: Firewalls or security settings may block the communication between the systems.
  SAP System Configuration: Issues with the SAP system configuration, such as missing or incorrect parameters in the instance profile.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination for correctness (e.g., target host, system number, client, user credentials).
  Test the connection using the "Connection Test" option in SM59.
  
  
  Review Authorizations: Ensure that the user used for the RFC call has the necessary authorizations to perform the required actions.
  Monitor System Load: Check the performance of both the source and target systems. If either system is under heavy load, consider optimizing performance or scheduling the RFC calls during off-peak hours.
  Check Firewall Settings: Ensure that firewalls or security settings are not blocking the required ports for RFC communication (typically TCP port 3200 for SAP).
  Review SAP System Configuration: Check the instance profile and other configuration settings to ensure they are set up correctly for RFC communication.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to CPE303 or RFC communication errors.
  Transaction Codes:
  
  SM59: For managing RFC destinations.
  SM21: For checking system logs for any related error messages.
  ST22: For analyzing dumps that may provide more context on the error.
  SICF: For checking the configuration of HTTP services if applicable.
  
  
  Logs and Traces: Review the application logs and traces for more detailed error messages that can provide additional context.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the steps you have already taken.