How To Fix KX956 - Queue & CPI-C RECEIVE Error &

SAP Error Message - Details

• Message type: E = Error

• Message class: KX - EC-EIS/EC-BP: Data basis, data collection

• Message number: 956

• Message text: Queue & CPI-C RECEIVE Error &

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

Queue communication could not be performed correctly.

How to fix this error?

To find the cause, check the system log and dump analysis in the target
system for entries generated by the user under whose name communication
was carried out. You can do this under
<LS>System -> Services -> Queue</> or via the implementation
guidelines.
Possible causes could be:
RESET N1
The combination of client, user and password is incorrect.
The user was not created as a CPIC user.
The transfer structure (sender program) in the target system has not
been maintained (RECEIVE error 18).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KX956 - Queue & CPI-C RECEIVE Error & ?

  The SAP error message KX956, which indicates a "Queue & CPI-C RECEIVE Error," typically relates to issues with the communication between SAP systems, particularly when using the CPI-C (Common Programming Interface Communication) protocol. This error can occur in various scenarios, such as when there are problems with the message queue, network issues, or configuration problems.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP systems can lead to communication failures.
  Queue Configuration: Incorrect configuration of the message queues can result in errors when trying to receive messages.
  System Load: High system load or resource constraints can cause delays or failures in processing messages.
  CPI-C Configuration: Misconfiguration of CPI-C settings in the SAP system can lead to communication errors.
  Message Format Issues: If the messages being sent do not conform to the expected format, it can lead to errors during processing.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the communicating SAP systems. Use tools like ping or traceroute to diagnose connectivity problems.
  Review Queue Configuration: Verify the configuration of the message queues in the SAP system. Ensure that they are set up correctly and that there are no issues with the queue itself.
  Monitor System Performance: Check the performance of the SAP system to ensure that it is not overloaded. If necessary, optimize system resources or schedule jobs during off-peak hours.
  Validate CPI-C Settings: Review the CPI-C configuration settings in the SAP system. Ensure that they are correctly set up according to the documentation and requirements.
  Check Message Formats: Ensure that the messages being sent conform to the expected formats. Validate the data being sent to ensure it meets the requirements of the receiving system.
  Review Logs: Check the SAP system logs (transaction SM21) for any additional error messages or warnings that could provide more context about the issue.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to KX956 or CPI-C communication errors.
  Documentation: Review the official SAP documentation for CPI-C and message queue configuration to ensure compliance with best practices.
  Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to diagnose and resolve the KX956 error effectively.