How To Fix WEBDYNPRO_RT012 - Number of round trips

SAP Error Message - Details

• Message type: E = Error

• Message class: WEBDYNPRO_RT - Message class of Web Dynpro runtime

• Message number: 012

• Message text: Number of round trips

Self-Explanatory Message

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• What is the cause and solution for SAP error message WEBDYNPRO_RT012 - Number of round trips ?

  SAP Error Message:
  
  WEBDYNPRO_RT012 - Number of round trips
  
  Cause:
  The error message WEBDYNPRO_RT012 occurs in SAP Web Dynpro applications when the number of round trips between the client (browser) and the server exceeds a predefined limit. A "round trip" refers to a request sent from the client to the server and the corresponding response back to the client.
  This situation typically arises when:
  
  The Web Dynpro application performs too many server calls in a short period.
  There is inefficient UI design causing excessive server communication.
  A loop or repeated action triggers multiple server requests unintentionally.
  Network latency or performance issues cause delays, making the system detect too many round trips.
  
  SAP sets a limit on the number of round trips to prevent performance degradation and to avoid overloading the server or network.
  
  Solution:
  To resolve the WEBDYNPRO_RT012 error, consider the following steps:
  
  
  Optimize the Web Dynpro Application:
  
  Review the UI design and logic to reduce the number of server calls.
  Avoid unnecessary UI updates or frequent data fetching.
  Use client-side processing where possible to minimize server round trips.
  Combine multiple server calls into a single call if feasible.
  
  
  
  Check for Loops or Repeated Actions:
  
  Debug the application to identify if any event handlers or methods cause repeated server calls.
  Fix any infinite loops or repeated triggers in the UI logic.
  
  
  
  Adjust the Round Trip Limit (if appropriate):
  
  The limit for round trips can be configured in the SAP Web Dynpro framework.
  Use transaction SMICM or adjust parameters in the Web Dynpro configuration to increase the allowed number of round trips.
  Note: Increasing the limit is generally not recommended unless you are sure the application requires it and the system can handle the load.
  
  
  
  Performance Tuning:
  
  Check network performance and server load.
  Ensure that the backend system is responsive and not causing delays.
  
  
  
  
  Related Information:
  
  SAP Note: Check for any SAP Notes related to WEBDYNPRO_RT012 for your specific SAP version.
  Web Dynpro Round Trip Limit Parameter:
  
  The parameter controlling the maximum number of round trips is often found in the Web Dynpro configuration or can be influenced by the parameter wd_roundtrip_limit.
  Transaction / Tools:
  
  Use ST22 to check for dumps related to this error.
  Use SMICM to monitor ICM and network performance.
  Use Web Dynpro Trace to analyze round trips and performance.
  
  
  
  
  Summary:
  
  Cause: Too many client-server round trips in a Web Dynpro application exceeding the configured limit.
  Solution: Optimize UI and backend logic to reduce round trips, fix loops, and if necessary, increase the round trip limit.
  Related Info: Check SAP Notes, use debugging and tracing tools, and monitor system/network performance.
  
  
  If you provide the exact context or application where this error occurs, I can help with more specific guidance.