How To Fix QL_COMMUNICATION066 - Error sending data using XI proxy

SAP Error Message - Details

• Message type: E = Error

• Message class: QL_COMMUNICATION - Messages for Communication

• Message number: 066

• Message text: Error sending data using XI proxy

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message QL_COMMUNICATION066 - Error sending data using XI proxy ?

  The SAP error message QL_COMMUNICATION066 indicates that there is an issue with sending data using XI (Exchange Infrastructure) proxy communication. This error typically arises in scenarios where SAP systems are trying to communicate with each other or with external systems via the SAP Process Integration (PI) or SAP Process Orchestration (PO) framework.
  Causes of QL_COMMUNICATION066
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system (e.g., firewalls, routing issues, or DNS problems).
  
  
  Configuration Errors: Incorrect configuration in the Integration Directory or in the sender/receiver communication channels can lead to this error.
  
  
  Proxy Settings: If the proxy settings are not correctly defined, it can prevent successful communication.
  
  
  Message Format Issues: The message being sent may not conform to the expected format, leading to rejection by the receiving system.
  
  
  Authorization Issues: The user or service account used for the communication may not have the necessary authorizations to send messages.
  
  
  System Load: High load on the SAP system or the target system can lead to timeouts or failures in message processing.
  
  
  Solutions to QL_COMMUNICATION066
  
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems involved. You can use tools like ping or traceroute to diagnose network issues.
  
  
  Review Configuration: Verify the configuration settings in the Integration Directory. Ensure that the sender and receiver communication channels are correctly set up.
  
  
  Check Proxy Settings: If applicable, review the proxy settings in the SAP system. Ensure that they are correctly configured to allow outbound communication.
  
  
  Validate Message Format: Ensure that the message being sent adheres to the expected format and structure. You may need to check the mapping and transformation logic.
  
  
  Authorization Check: Verify that the user or service account has the necessary authorizations to perform the communication. Check roles and authorizations in the SAP system.
  
  
  Monitor System Performance: Check the performance of both the sending and receiving systems. If either system is under heavy load, consider optimizing performance or scheduling message processing during off-peak hours.
  
  
  Check Logs: Review the application logs (transaction SLG1) and the integration engine logs for more detailed error messages that can provide additional context for the issue.
  
  
  Retry Mechanism: Implement a retry mechanism for transient errors, as sometimes network issues can be temporary.
  
  
  Related Information
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for XI/PI/PO for best practices in configuration and troubleshooting.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the QL_COMMUNICATION066 error effectively. If the issue persists, consider reaching out to SAP support for further assistance.