How To Fix SY311 - Error during send (CMSEND), return code = &

SAP Error Message - Details

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 311

• Message text: Error during send (CMSEND), return code = &

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SY311 - Error during send (CMSEND), return code = & ?

  The SAP error message SY311, which indicates "Error during send (CMSEND), return code = &", typically occurs when there is an issue with the communication between the SAP system and an external system or service. This error can arise in various contexts, such as when sending emails, messages, or data to other systems.
  Causes:
  
  Network Issues: Problems with the network connection can prevent successful communication.
  Configuration Errors: Incorrect settings in the SAP system or the external system can lead to communication failures.
  Authorization Issues: The user or system may not have the necessary permissions to send messages or data.
  Service Unavailability: The external service or system may be down or unreachable.
  Incorrect Parameters: Invalid or missing parameters in the function call can lead to errors during the send operation.
  Firewall or Security Settings: Firewalls or security settings may block the communication.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection is stable and that the SAP system can reach the external system.
  Review Configuration Settings: Verify the configuration settings for the communication method being used (e.g., SMTP settings for email).
  Check Authorizations: Ensure that the user or system has the necessary authorizations to perform the send operation.
  Test External Service: Check if the external service is up and running. You can try to access it directly to confirm its availability.
  Review Parameters: Double-check the parameters being passed to the function to ensure they are correct and complete.
  Consult Logs: Look at the SAP application logs (transaction SLG1) or system logs (transaction SM21) for more detailed error messages that can provide additional context.
  Firewall Settings: If applicable, check firewall settings to ensure that they are not blocking the communication.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SM21 (System Log), SLG1 (Application Log), or SOST (Send Requests) to investigate further.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches or updates.
  Documentation: Review the documentation for the specific communication method you are using (e.g., email, RFC, etc.) for any additional configuration requirements.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance, providing them with the return code and any additional context from the logs.