How To Fix ML4HMIGRATION004 - Error when calling RFC &1: &2&3&4

SAP Error Message - Details

• Message type: E = Error

• Message class: ML4HMIGRATION - Message Class for ML4H Migration Tools

• Message number: 004

• Message text: Error when calling RFC &1: &2&3&4

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 ML4HMIGRATION004 - Error when calling RFC &1: &2&3&4 ?

  The SAP error message ML4HMIGRATION004 typically occurs during the migration of material master data, particularly when using the Migration Cockpit or similar tools. This error indicates that there was an issue when calling a Remote Function Call (RFC) during the migration process.
  Cause:
  The error can be caused by several factors, including but not limited to:
  
  RFC Destination Issues: The RFC destination might not be correctly configured or reachable.
  Authorization Problems: The user executing the migration may not have the necessary authorizations to perform the operation.
  Data Issues: There may be inconsistencies or errors in the data being migrated, such as missing mandatory fields or incorrect data formats.
  System Configuration: There could be configuration issues in the SAP system that prevent the RFC from executing properly.
  Network Issues: Network connectivity problems between the systems involved in the RFC call.
  
  Solution:
  To resolve the ML4HMIGRATION004 error, you can take the following steps:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 and verify the configuration of the RFC destination being called. Ensure that it is correctly set up and that you can test the connection successfully.
  
  
  
  Review Authorizations:
  
  Ensure that the user executing the migration has the necessary authorizations to perform the required actions. You may need to check roles and profiles assigned to the user.
  
  
  
  Validate Data:
  
  Review the data being migrated for any inconsistencies or errors. Ensure that all mandatory fields are filled and that the data adheres to the expected formats.
  
  
  
  Check System Logs:
  
  Use transaction SLG1 to check the application logs for more detailed error messages that can provide additional context about the failure.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues affecting the connection between the systems involved in the RFC call.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Debugging:
  
  If you have access to the development environment, you may consider debugging the RFC function module to identify the exact point of failure.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the Migration Cockpit and material master data migration for specific guidelines and best practices.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the steps you have already taken.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the ML4HMIGRATION004 error.