How To Fix STW_OL305 - Error from method call in RFC session

SAP Error Message - Details

• Message type: E = Error

• Message class: STW_OL - Messages of the Object Layer (Stream Work Library)

• Message number: 305

• Message text: Error from method call in RFC session

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 STW_OL305 - Error from method call in RFC session ?

  The SAP error message STW_OL305, which indicates "Error from method call in RFC session," typically arises during Remote Function Call (RFC) operations in SAP systems. This error can occur for various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes of STW_OL305 Error
  
  
  Network Issues: Problems with the network connection between the SAP systems can lead to RFC errors. This includes timeouts, disconnections, or poor network performance.
  
  
  Authorization Issues: The user executing the RFC call may not have the necessary authorizations to perform the requested operation.
  
  
  Configuration Errors: Incorrect configuration of the RFC destination or the target system can lead to this error. This includes issues with the connection parameters or the target system's settings.
  
  
  System Resource Limitations: If the target system is under heavy load or has resource limitations (like memory or CPU), it may not be able to process the RFC call.
  
  
  Code Issues: There may be bugs or issues in the ABAP code being executed during the RFC call, leading to exceptions that trigger this error.
  
  
  Version Compatibility: Incompatibility between different versions of SAP systems can also lead to RFC errors.
  
  
  Solutions to STW_OL305 Error
  
  
  Check Network Connectivity: Ensure that there are no network issues between the systems. You can use tools like ping or traceroute to diagnose connectivity problems.
  
  
  Review Authorizations: Verify that the user has the necessary authorizations to execute the RFC function. You can check this in transaction SU53 or by reviewing the user's roles and profiles.
  
  
  Validate RFC Destination: Go to transaction SM59 and check the configuration of the RFC destination. Ensure that the connection parameters are correct and that the target system is reachable.
  
  
  Monitor System Performance: Use transaction SM50 or SM66 to monitor the performance of the target system. If the system is overloaded, consider optimizing the workload or scheduling the RFC calls during off-peak hours.
  
  
  Debugging ABAP Code: If the error is related to specific ABAP code, you may need to debug the code to identify the root cause. Use transaction SE80 or SE37 to analyze the function module being called.
  
  
  Check SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  
  Consult Logs: Review the system logs (transaction SM21) and the developer traces (transaction ST22) for any additional error messages or stack traces that can provide more context about the error.
  
  
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  
  Related Information
  
  
  Transaction Codes: 
  
  SM59 - RFC Destinations
  SU53 - Authorization Check
  ST22 - Dump Analysis
  SM21 - System Log
  SM50/SM66 - Process Overview
  
  
  
  SAP Notes: Always check the SAP Support Portal for the latest notes related to RFC errors and STW_OL305.
  
  
  By following these steps, you should be able to diagnose and resolve the STW_OL305 error effectively.