How To Fix /SCWM/WHO555 - Cannot execute external outbound message (Queue Name &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/WHO -

• Message number: 555

• Message text: Cannot execute external outbound message (Queue Name &1)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/WHO555 - Cannot execute external outbound message (Queue Name &1) ?

  The SAP error message /SCWM/WHO555 Cannot execute external outbound message (Queue Name &1) typically occurs in the context of SAP Extended Warehouse Management (EWM) when there is an issue with processing outbound messages to external systems. This error can arise due to various reasons, including configuration issues, connectivity problems, or issues with the message queue itself.
  Causes:
  
  Queue Configuration Issues: The specified queue may not be properly configured or may not exist.
  Message Processing Errors: There may be issues with the message format or content that prevent it from being processed.
  Connectivity Problems: There could be network issues preventing communication with the external system.
  Authorization Issues: The user or system may not have the necessary permissions to send messages to the external system.
  System Performance: High system load or performance issues may prevent the message from being processed in a timely manner.
  External System Issues: The external system may be down or experiencing issues that prevent it from receiving messages.
  
  Solutions:
  
  Check Queue Configuration: Verify that the queue specified in the error message is correctly configured in the SAP system. Ensure that it exists and is active.
  Review Message Content: Check the content of the outbound message for any errors or inconsistencies that may prevent processing.
  Network Connectivity: Ensure that there are no network issues between the SAP system and the external system. Test connectivity to the external system.
  Authorization Check: Verify that the user or system has the necessary authorizations to send messages to the external system.
  Monitor System Performance: Check the performance of the SAP system to ensure it is not overloaded. If necessary, optimize performance or schedule message processing during off-peak hours.
  Check External System Status: Verify that the external system is operational and able to receive messages. Contact the external system's support team if necessary.
  Review Logs: Check the application logs and system logs for any additional error messages or warnings that may provide more context about the issue.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like /SCWM/OUTB to monitor outbound messages and /SCWM/WHO to check the status of the message queues.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues related to this error message.
  Documentation: Refer to the SAP EWM documentation for detailed information on configuring and managing outbound messages.
  
  If the issue persists after following these steps, it may be necessary to engage SAP support for further assistance.