How To Fix RSAR159 - The system type (SAP or CUS) could not be determined.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAR - Data Transfer and Metadata Maintenance

• Message number: 159

• Message text: The system type (SAP or CUS) could not be determined.

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 RSAR159 - The system type (SAP or CUS) could not be determined. ?

  The SAP error message RSAR159 indicates that the system type (SAP or CUS) could not be determined. This error typically occurs in the context of SAP BW (Business Warehouse) when there is an issue with the configuration of the system landscape or when trying to execute a data transfer process.
  Causes:
  
  Incorrect System Configuration: The system may not be properly configured in the SAP Landscape Management (SLM) or in the BW system settings.
  Missing or Incorrect RFC Destination: The Remote Function Call (RFC) destination may not be set up correctly, or the connection to the source system may be failing.
  Transport Layer Issues: There may be issues with the transport layer settings that prevent the system from identifying its type.
  Authorization Issues: The user executing the process may not have the necessary authorizations to access the required system information.
  System Type Not Defined: The system type may not be defined in the BW system settings.
  
  Solutions:
  
  
  Check System Configuration:
  
  Go to transaction RSCUSTV10 and verify the settings for the system type. Ensure that the system is correctly defined as either SAP or CUS.
  Ensure that the system is correctly registered in the BW system.
  
  
  
  Verify RFC Destinations:
  
  Use transaction SM59 to check the RFC destinations. Ensure that the destination to the source system is correctly configured and that the connection is working.
  Test the connection to ensure that it is successful.
  
  
  
  Review Transport Layer Settings:
  
  Check the transport layer settings in transaction RSCUSTV10 and ensure that they are correctly configured.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the required data and execute the data transfer process.
  
  
  
  System Type Definition:
  
  If the system type is not defined, you may need to define it in the BW system settings. This can usually be done in the configuration settings for the BW system.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSCUSTV10 for customizing BW settings and SM59 for managing RFC destinations.
  SAP Documentation: Refer to the official SAP documentation for BW and data transfer processes for more detailed guidance on configuration and troubleshooting.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.