How To Fix RSDS_ACCESS018 - Connection to source system &1 not working. Check source system.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS_ACCESS - Access Messages

• Message number: 018

• Message text: Connection to source system &1 not working. Check 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDS_ACCESS018 - Connection to source system &1 not working. Check source system. ?

  The SAP error message RSDS_ACCESS018 indicates that there is an issue with the connection to a source system in a DataSource. This error typically occurs in the context of SAP BW (Business Warehouse) when trying to extract data from a source system, such as an SAP ERP system or a non-SAP system.
  Cause
  The error can be caused by several factors, including:
  
  Network Issues: There may be network connectivity problems between the SAP BW system and the source system.
  Incorrect Configuration: The connection settings for the source system may be incorrectly configured in the SAP BW system.
  Authorization Issues: The user credentials used to connect to the source system may not have the necessary authorizations.
  Source System Down: The source system may be down or not available for some reason.
  RFC Destination Issues: The RFC (Remote Function Call) destination used to connect to the source system may be incorrectly set up or inactive.
  Transport Layer Issues: There may be issues with the transport layer that prevent communication between systems.
  
  Solution
  To resolve the RSDS_ACCESS018 error, you can follow these steps:
  
  
  Check Network Connectivity:
  
  Ensure that the SAP BW system can reach the source system over the network. You can use tools like ping or telnet to test connectivity.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP BW system and check the RFC destination that is configured for the source system.
  Test the connection by using the "Connection Test" option. If it fails, check the configuration settings.
  
  
  
  Check Source System Configuration:
  
  Ensure that the source system is correctly configured in the SAP BW system. This includes checking the logical system name and ensuring it matches the source system.
  
  
  
  Review Authorizations:
  
  Verify that the user credentials used for the connection have the necessary authorizations to access the source system.
  
  
  
  Check Source System Status:
  
  Ensure that the source system is up and running. If it is down, you will need to wait until it is back online.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages that may provide more context.
  
  
  
  Consult Basis Team:
  
  If the issue persists, consult your SAP Basis team for further investigation, as they may need to check system configurations or network settings.
  
  
  
  Related Information
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  SLG1: Application Log
  
  
  Documentation: Refer to SAP Help documentation for more details on configuring source systems and troubleshooting connectivity issues.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to RSDS_ACCESS018.
  
  By following these steps, you should be able to identify and resolve the issue causing the RSDS_ACCESS018 error.