How To Fix /PF1/FH_CONV_XML023 - RFC failure (&1). Switch to sequential mode

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/FH_CONV_XML -

• Message number: 023

• Message text: RFC failure (&1). Switch to sequential mode

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 /PF1/FH_CONV_XML023 - RFC failure (&1). Switch to sequential mode ?

  The SAP error message /PF1/FH_CONV_XML023 RFC failure (&1). Switch to sequential mode? typically indicates an issue with Remote Function Call (RFC) communication in the context of XML conversion or processing. This error can occur in various scenarios, such as when trying to convert data to XML format or when interfacing with external systems.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the RFC destination.
  RFC Destination Configuration: The RFC destination may not be configured correctly, or the target system may be down.
  Timeouts: The RFC call may be timing out due to long processing times or heavy load on the system.
  Data Issues: There may be issues with the data being processed, such as invalid characters or data types that cannot be converted to XML.
  System Load: High load on the SAP system or the target system can lead to failures in processing RFC calls.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the SAP system and the target system. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination: Check the configuration of the RFC destination in transaction SM59. Ensure that the destination is correctly set up and that the target system is reachable.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings for the RFC call in the RFC destination configuration.
  Data Validation: Validate the data being sent to ensure it conforms to the expected format and does not contain invalid characters.
  Switch to Sequential Mode: If the error suggests switching to sequential mode, you can do this by adjusting the settings in the relevant function module or program. This may help in processing the data in a more controlled manner, especially if the issue is related to parallel processing.
  Check System Load: Monitor the performance of both the SAP system and the target system to identify any bottlenecks or high load situations.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SM21 (System Log), ST22 (Dump Analysis), and SM37 (Job Monitoring) to gather more information about the error and its context.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Logs and Traces: Review application logs and traces for more detailed error messages that can provide insights into the root cause of the RFC failure.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.