How To Fix CMA_CI004 - Internal error: Could not receive message

SAP Error Message - Details

• Message type: E = Error

• Message class: CMA_CI - CMS-CI Messages

• Message number: 004

• Message text: Internal error: Could not receive message

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 CMA_CI004 - Internal error: Could not receive message ?

  The SAP error message CMA_CI004 Internal error: Could not receive message typically indicates a communication issue between different components of the SAP system, often related to the Central Instance (CI) and the application server. This error can arise due to various reasons, including network issues, configuration problems, or issues with the SAP kernel.
  Causes:
  
  Network Issues: Problems with the network connection between the application server and the database or other components can lead to this error.
  Configuration Errors: Incorrect settings in the SAP system configuration, such as RFC destinations or instance profiles, can cause communication failures.
  SAP Kernel Issues: Bugs or inconsistencies in the SAP kernel version being used may lead to internal errors.
  Resource Limitations: Insufficient system resources (CPU, memory) can cause timeouts or failures in message processing.
  Database Issues: Problems with the database, such as locks or performance issues, can also lead to communication errors.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the application server and the database or other components. Use tools like ping or traceroute to diagnose connectivity.
  Review Configuration Settings: Verify the configuration of RFC destinations and ensure that all necessary parameters are correctly set. Check the instance profile for any misconfigurations.
  Update SAP Kernel: If you suspect a kernel issue, consider updating to the latest version of the SAP kernel, as newer versions may contain bug fixes.
  Monitor System Resources: Use transaction codes like SM50 or SM66 to monitor system performance and check for any resource bottlenecks. If necessary, allocate more resources to the SAP system.
  Check Database Performance: Use database monitoring tools to check for locks, long-running queries, or other performance issues that could affect communication.
  Review SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or recommendations available.
  Restart Services: Sometimes, simply restarting the affected services or the entire SAP system can resolve transient issues.
  
  Related Information:
  
  Transaction Codes: Use SM21 to check the system log for any related error messages that might provide more context.
  SAP Support: If the issue persists, consider reaching out to SAP Support with detailed logs and system information for further assistance.
  Documentation: Review the official SAP documentation for your specific version to understand any known issues or additional troubleshooting steps.
  
  By following these steps, you should be able to diagnose and resolve the CMA_CI004 error in your SAP environment.