How To Fix ICM602 - Number of requests in ICM queue has exceeded the threshold value

SAP Error Message - Details

• Message type: E = Error

• Message class: ICM - Messages for ICM Monitor

• Message number: 602

• Message text: Number of requests in ICM queue has exceeded the threshold value

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ICM602 - Number of requests in ICM queue has exceeded the threshold value ?

  The SAP error message ICM602 indicates that the number of requests in the Internet Communication Manager (ICM) queue has exceeded a predefined threshold value. This can lead to performance issues and may prevent the system from processing incoming requests efficiently.
  Cause:
  
  High Load: The system may be experiencing a high volume of incoming requests that exceed the processing capacity of the ICM.
  Configuration Issues: The ICM parameters may not be optimally configured for the current workload.
  Long Processing Times: Requests may be taking longer to process due to backend system delays, which can lead to a backlog in the ICM queue.
  Resource Limitations: Insufficient system resources (CPU, memory, etc.) can hinder the ICM's ability to process requests promptly.
  Network Issues: Network latency or connectivity problems can also contribute to delays in request processing.
  
  Solution:
  
  
  Increase ICM Queue Size: You can increase the threshold value for the ICM queue. This can be done by adjusting the parameter icm/HTTP/queue_size in the SAP profile. However, this is a temporary solution and should be accompanied by further investigation.
  
  
  Optimize ICM Configuration: Review and optimize the ICM parameters. Key parameters to consider include:
  
  icm/HTTP/num_concurrent_requests: Increase the number of concurrent requests if the system can handle it.
  icm/HTTP/timeout: Adjust timeout settings to ensure that requests do not hang for too long.
  
  
  
  Monitor System Performance: Use transaction codes like ST03N, ST06, or SM50 to monitor system performance and identify bottlenecks. Look for long-running processes or high CPU/memory usage.
  
  
  Backend Performance: Investigate the performance of the backend systems (e.g., database, application servers) to ensure they are not causing delays. Optimize queries, indexes, and application logic as needed.
  
  
  Load Balancing: If applicable, consider implementing load balancing to distribute incoming requests across multiple application servers.
  
  
  Check Network Configuration: Ensure that there are no network issues affecting the communication between the client and the SAP system.
  
  
  Review Logs: Check the ICM logs (transaction SMICM) for any additional error messages or warnings that could provide more context about the issue.
  
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may provide additional guidance or patches related to ICM performance issues.
  Documentation: Refer to the official SAP documentation for detailed information on ICM configuration and performance tuning.
  SAP Community: Engage with the SAP Community forums for insights and solutions shared by other users who may have encountered similar issues.
  
  By addressing the underlying causes and optimizing the configuration, you can mitigate the occurrence of the ICM602 error and improve the overall performance of your SAP system.