How To Fix CD126 - Error (RFC dump): &1 &2 &3 &4

SAP Error Message - Details

• Message type: E = Error

• Message class: CD - Change Documents

• Message number: 126

• Message text: Error (RFC dump): &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.

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 CD126 - Error (RFC dump): &1 &2 &3 &4 ?

  The SAP error message CD126, which indicates an RFC (Remote Function Call) dump, typically arises when there is an issue with the communication between SAP systems or between an SAP system and an external system. The parameters &1, &2, &3, and &4 in the error message provide specific details about the nature of the error, such as the function module involved, the RFC destination, or the specific error code.
  Causes of CD126 Error:
  
  Network Issues: Problems with network connectivity can lead to RFC errors. This could be due to firewalls, network outages, or misconfigured network settings.
  Configuration Errors: Incorrect settings in the RFC destination (SM59) can cause communication failures. This includes wrong hostnames, ports, or user credentials.
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations to execute the function module.
  Function Module Errors: The function module being called may have its own issues, such as runtime errors or exceptions that are not handled properly.
  System Load: High load on the SAP system can lead to timeouts or resource allocation issues, resulting in RFC dumps.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the systems is stable and that there are no firewalls blocking the communication.
  Review RFC Destination Settings: Go to transaction code SM59 and check the configuration of the RFC destination. Ensure that the hostname, service, and user credentials are correct.
  Check Authorizations: Verify that the user used for the RFC call has the necessary authorizations to execute the function module.
  Analyze the Function Module: If the error is related to a specific function module, check its implementation for any potential issues or unhandled exceptions.
  Monitor System Performance: Use transaction codes like ST22 (dump analysis) and SM21 (system log) to analyze the dumps and logs for more details. Check for any performance issues that might be affecting the system.
  Increase Timeout Settings: If the issue is related to timeouts, consider increasing the timeout settings in the RFC destination configuration.
  
  Related Information:
  
  Transaction Codes:
  
  SM59: RFC Destinations
  ST22: Dump Analysis
  SM21: System Log
  SM37: Job Monitoring
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC dumps or the CD126 error.
  Documentation: Review SAP documentation for best practices on configuring RFC connections and handling errors.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance, providing them with the details from the RFC dump and any relevant logs.