How To Fix E0740 - IDoc transfer: CPI-C error - error while sending data

SAP Error Message - Details

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 740

• Message text: IDoc transfer: CPI-C error - error while sending data

What causes this issue?

Ther CPI-C command 'communication send' failed.
Return code for command: &v1&

System Response

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

How to fix this error?

If the error keeps occurring, activate the CPI-C trace functionality.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0740 - IDoc transfer: CPI-C error - error while sending data ?

  The SAP error message E0740, which indicates a "CPI-C error - error while sending data" during IDoc transfer, typically arises from issues related to communication between the SAP system and the receiving system. Here are some common causes, potential solutions, and related information for this error:
  Causes:
  
  Network Issues: Problems with the network connection between the SAP system and the target system can lead to communication failures.
  Configuration Errors: Incorrect configuration of the Logical System, RFC destinations, or partner profiles can cause issues in IDoc processing.
  System Availability: The target system may be down or not reachable, leading to a failure in sending IDocs.
  CPI-C Protocol Issues: The CPI-C (Common Programming Interface Communication) protocol may not be properly configured or may have compatibility issues.
  Firewall Restrictions: Firewalls or security settings may block the communication ports required for IDoc transfer.
  Resource Limitations: Insufficient resources (like memory or processing power) on either the sending or receiving system can lead to failures.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the two systems is stable and operational. You can use tools like ping or traceroute to diagnose connectivity issues.
  Review Configuration:
  
  Verify the Logical System settings in transaction SALE (ALE Configuration).
  Check the RFC destination settings in transaction SM59 to ensure they are correctly configured and test the connection.
  Ensure that the partner profiles in transaction WE20 are set up correctly for the IDoc communication.
  
  
  Monitor System Status: Check the status of the target system to ensure it is up and running. You can use transaction SM37 to monitor job statuses and transaction SM21 for system logs.
  Check CPI-C Configuration: Ensure that the CPI-C settings are correctly configured in both systems. This includes checking the CPI-C parameters in transaction RZ10 or RZ11.
  Firewall and Security Settings: Review firewall rules and security settings to ensure that the necessary ports for IDoc communication are open.
  Resource Monitoring: Monitor system resources using transaction SM50 or SM66 to check for any bottlenecks or resource limitations.
  
  Related Information:
  
  Transaction Codes:
  
  WE02: To monitor IDocs and check their status.
  WE19: To test IDoc processing.
  SM58: To check for any asynchronous RFC errors.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to CPI-C errors or IDoc processing.
  Documentation: Review SAP documentation on IDoc processing and CPI-C communication for best practices and troubleshooting steps.
  
  If the issue persists after checking these areas, it may be beneficial to engage with SAP support for further assistance.