How To Fix /SCWM/CHM_IF121 - Communication error: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/CHM_IF -

• Message number: 121

• Message text: Communication error: &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.

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 /SCWM/CHM_IF121 - Communication error: &1 ?

  The SAP error message /SCWM/CHM_IF121 Communication error: &1 typically occurs in the context of the Extended Warehouse Management (EWM) module, particularly when there is an issue with communication between the EWM system and an external system or interface. The &1 in the error message usually represents a specific error code or message that provides more detail about the nature of the communication error.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP EWM system and the external system (e.g., a third-party logistics provider, an external warehouse management system, etc.).
  Configuration Errors: Incorrect configuration settings in the EWM system or the external system can lead to communication failures.
  Service Unavailability: The external service or API that EWM is trying to communicate with may be down or unavailable.
  Authorization Issues: The user or system may not have the necessary permissions to access the external system.
  Data Format Issues: The data being sent or received may not be in the expected format, leading to parsing errors.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the SAP EWM system and the external system. You can use tools like ping or traceroute to diagnose network issues.
  Review Configuration Settings: Verify the configuration settings in both the EWM and the external system. Ensure that all necessary parameters (like URLs, ports, and credentials) are correctly set.
  Check External System Status: Confirm that the external system or service is up and running. If it is down, you may need to wait until it is restored.
  Review Authorization: Ensure that the user or system account being used for the communication has the necessary permissions to access the external system.
  Examine Logs: Check the application logs in both the SAP EWM system and the external system for any additional error messages or details that can help diagnose the issue.
  Data Validation: Validate the data being sent to ensure it meets the expected format and requirements of the external system.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for EWM and the specific interfaces you are using to ensure that you are following best practices for configuration and communication.
  Community Forums: Consider reaching out to SAP community forums or user groups for additional insights or similar experiences from other users.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with SAP support for further assistance.