How To Fix RSO_MMR004 - Error during remote communication

SAP Error Message - Details

• Message type: E = Error

• Message class: RSO_MMR - BW Repository MMR Connection

• Message number: 004

• Message text: Error during remote communication

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 RSO_MMR004 - Error during remote communication ?

  The SAP error message RSO_MMR004, which indicates "Error during remote communication," typically occurs in the context of SAP Business Warehouse (BW) or SAP BusinessObjects when there is an issue with the communication between the SAP system and a remote system (such as a database or another SAP instance). This error can arise due to various reasons, including network issues, configuration problems, or authorization issues.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP system and the remote system can lead to communication failures.
  Configuration Errors: Incorrect settings in the RFC (Remote Function Call) destination or in the BW settings can cause this error.
  Authorization Issues: The user credentials used for the remote connection may not have the necessary permissions.
  Service Availability: The remote service or system may be down or not reachable.
  Firewall Restrictions: Firewalls may block the communication ports required for the connection.
  Version Compatibility: Incompatibility between different versions of SAP systems or components can also lead to communication errors.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the SAP system and the remote system is stable and functioning. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination: Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that the connection type, target host, and system number are correctly configured.
  Test Connection: In transaction SM59, you can test the RFC connection to see if it is working properly. If the test fails, it will provide more details about the issue.
  Check Authorizations: Ensure that the user credentials used for the remote connection have the necessary authorizations to access the remote system.
  Review Logs: Check the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages that may provide more context about the issue.
  Firewall Settings: If applicable, check the firewall settings to ensure that the necessary ports for SAP communication are open.
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for more details on configuring RFC connections and troubleshooting communication issues.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues faced by other users and the solutions they implemented.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if it involves complex configurations or system-specific issues.
  
  By following these steps, you should be able to diagnose and resolve the RSO_MMR004 error effectively.