How To Fix CCMS_XMB027 - Application System: Sender messages with QoS "Exactly Once"

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 027

• Message text: Application System: Sender 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_XMB027 - Application System: Sender messages with QoS "Exactly Once" ?

  The SAP error message CCMS_XMB027 typically relates to issues with the Quality of Service (QoS) settings in the SAP Exchange Infrastructure (XI) or Process Integration (PI) environment. Specifically, this error indicates that there are problems with messages that are being sent with the QoS setting "Exactly Once." This setting ensures that messages are delivered exactly one time, which is critical for maintaining data integrity in transactional systems.
  Cause:
  
  Message Processing Issues: The error can occur if there are issues in processing the messages, such as timeouts, system overload, or configuration errors.
  Database Locking: If the database is locked or if there are issues with the database connection, it can prevent the message from being processed correctly.
  Configuration Errors: Incorrect configuration in the sender or receiver communication channels can lead to this error.
  Network Issues: Problems in the network can cause message delivery failures, leading to this error.
  Message Corruption: If the message is corrupted during transmission, it may not be processed correctly.
  
  Solution:
  
  Check System Logs: Review the system logs and the message monitoring in the SAP PI/XI system to identify any specific errors or warnings that can provide more context.
  Review Configuration: Ensure that the sender and receiver communication channels are correctly configured. Check the QoS settings and make sure they are appropriate for your scenario.
  Database Health: Check the health of the database and ensure that there are no locks or performance issues. You may need to consult your database administrator.
  Network Stability: Verify the network connections between the systems involved in the message exchange. Ensure that there are no connectivity issues.
  Message Retry: If the message has failed, you may need to manually retry the message or configure automatic retries in the system.
  Update SAP Notes: Check for any relevant SAP Notes that may address known issues related to this error message. Applying the latest patches or updates can sometimes resolve underlying issues.
  
  Related Information:
  
  Quality of Service (QoS): Understanding the different QoS settings (e.g., "At Most Once," "At Least Once," "Exactly Once") is crucial for configuring message processing in SAP PI/XI.
  Monitoring Tools: Utilize SAP's monitoring tools, such as the Runtime Workbench, to track message flows and identify bottlenecks or failures.
  Documentation: Refer to SAP documentation for detailed guidance on configuring and troubleshooting SAP PI/XI environments.
  
  If the issue persists after following these steps, it may be beneficial to engage SAP support for further assistance.