How To Fix CCMS_XMB028 - Application system: Receiver messages with QoS "Exactly Once"

SAP Error Message - Details

• Message type: E = Error

• Message class: CCMS_XMB - CCMS: Monitoring for Exchang Infrastructure

• Message number: 028

• Message text: Application system: Receiver messages with QoS "Exactly Once"

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CCMS_XMB028 - Application system: Receiver messages with QoS "Exactly Once" ?

  The SAP error message CCMS_XMB028 typically relates to issues with the messaging system in SAP, particularly when dealing with the Quality of Service (QoS) setting "Exactly Once." This QoS setting ensures that messages are delivered exactly one time, which is critical for maintaining data integrity in transactional systems.
  Cause:
  The error message CCMS_XMB028 can occur due to several reasons, including:
  
  
  Message Processing Failures: If the receiver system is unable to process the message due to a temporary issue (e.g., system downtime, network issues, etc.), it can lead to this error.
  
  
  Configuration Issues: Incorrect configuration of the messaging system or the receiver system can lead to failures in message delivery.
  
  
  Resource Limitations: If the system is under heavy load or if there are resource constraints (e.g., memory, CPU), it may not be able to process messages as expected.
  
  
  Database Locking: If the database is locked or if there are issues with database transactions, it can prevent the message from being processed.
  
  
  Message Format Issues: If the message format does not match the expected format in the receiver system, it can lead to processing failures.
  
  
  Solution:
  To resolve the CCMS_XMB028 error, you can take the following steps:
  
  
  Check System Status: Ensure that both the sender and receiver systems are up and running. Check for any downtime or maintenance activities.
  
  
  Review Configuration: Verify the configuration settings for the messaging system and the receiver. Ensure that all parameters are correctly set.
  
  
  Monitor System Resources: Check the system's resource usage (CPU, memory, etc.) to ensure that it is not overloaded. If necessary, optimize performance or scale resources.
  
  
  Examine Logs: Look at the application logs and system logs for any additional error messages or warnings that could provide more context about the failure.
  
  
  Database Checks: Ensure that the database is functioning correctly and that there are no locks or transaction issues that could be causing the problem.
  
  
  Retry Mechanism: Implement or check the existing retry mechanism for message delivery. If a message fails, it should be retried according to the defined logic.
  
  
  Test Message Format: Validate the message format being sent to ensure it matches the expected format in the receiver system.
  
  
  Consult Documentation: Refer to SAP documentation or support notes related to the specific version of SAP you are using for any known issues or patches.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific fixes or recommendations related to the CCMS_XMB028 error.
  Quality of Service (QoS): Understanding the different QoS settings (e.g., "At Most Once," "At Least Once," "Exactly Once") can help in configuring the messaging system appropriately.
  Monitoring Tools: Utilize SAP monitoring tools (like CCMS) to keep track of message processing and system health.
  
  If the issue persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.