How To Fix RSAR301 - The existing RFC description does not corr. to that of the source system

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAR - Data Transfer and Metadata Maintenance

• Message number: 301

• Message text: The existing RFC description does not corr. to that of the source system

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 RSAR301 - The existing RFC description does not corr. to that of the source system ?

  The SAP error message RSAR301 indicates that there is a mismatch between the RFC (Remote Function Call) description in the SAP system and the source system that you are trying to connect to. This typically occurs in scenarios involving data transfer, such as when using SAP Data Services, SAP BW, or other data extraction processes.
  Cause:
  
  RFC Configuration Issues: The RFC destination may not be correctly configured, or the connection parameters may not match the source system.
  Changes in Source System: If there have been changes in the source system (like changes in the data structure, table names, or field names), the RFC description may no longer correspond to the current state of the source system.
  Version Mismatch: The version of the source system may differ from what the RFC destination is expecting, leading to discrepancies in the data structure.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the required data in the source system.
  
  Solution:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Verify the configuration of the RFC destination. Ensure that the connection parameters (like the target host, system number, client, user, and password) are correct.
  Test the connection to ensure it is working properly.
  
  
  
  Update RFC Description:
  
  If the source system has changed, you may need to update the RFC description in the SAP system. This can involve regenerating the RFC function modules or updating the data source definitions.
  
  
  
  Check for Changes in Source System:
  
  Review any recent changes made to the source system that could affect the data structure. If changes have been made, you may need to adjust the data extraction logic accordingly.
  
  
  
  Authorization Check:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to access the required data in the source system.
  
  
  
  Recreate the Data Source:
  
  If the issue persists, consider deleting and recreating the data source in the SAP system to ensure that it reflects the current structure of the source system.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: To manage RFC destinations.
  SE37: To view and manage function modules.
  RSA1: To access the Data Warehousing Workbench in SAP BW.
  
  
  
  Documentation: Refer to SAP Help documentation for detailed guidance on configuring RFC connections and troubleshooting common issues.
  
  
  SAP Notes: Check for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RSAR301 or RFC configuration.
  
  
  By following these steps, you should be able to resolve the RSAR301 error and ensure that your RFC connection is properly configured and functioning.