How To Fix ICM509 - Number of MPI buffers used

ICM509 - Overview

• Message type: E = Error

• Message class: ICM - Messages for ICM Monitor

• Message number: 509

• Message text: Number of MPI buffers used

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message ICM509 - Number of MPI buffers used ?

  The SAP error message ICM509, which indicates "Number of MPI buffers used," typically relates to issues with the Internet Communication Manager (ICM) in SAP systems. This error can occur when the number of MPI (Message Passing Interface) buffers exceeds the configured limit, which can lead to performance issues or communication failures.
  
  Cause:
  
  High Load: The system may be experiencing a high volume of requests, leading to an increased number of MPI buffers being utilized.
  Configuration Limits: The default configuration for MPI buffers may not be sufficient for the current workload.
  Memory Issues: Insufficient memory allocation for the ICM can lead to buffer overflow or exhaustion.
  Long-Running Processes: Long-running transactions or processes may hold onto buffers longer than expected, causing a backlog.
  
  
  Solution:
  
  
  Increase MPI Buffer Size:
  
  You can increase the number of MPI buffers in the ICM configuration. This can be done by adjusting the parameter icm/HTTP/number_of_mpi_buffers in the SAP profile.
  Example: If the current value is set to