How To Fix DS179 - System & is not an R/2 system

SAP Error Message - Details

• Message type: E = Error

• Message class: DS - Messages for Editing Text Elements in ABAP Programs

• Message number: 179

• Message text: System & is not an R/2 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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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DS179 - System & is not an R/2 system ?

  The SAP error message DS179 indicates that the system you are trying to connect to or interact with is not recognized as an R/2 system. This error typically arises in scenarios where there is an attempt to access or integrate with an R/2 system from an R/3 or S/4HANA environment.
  Cause:
  
  Incorrect System Type: The system you are trying to connect to is not configured as an R/2 system. R/2 is an older SAP architecture, and if you are using an R/3 or S/4HANA system, it will not recognize R/2 systems.
  Configuration Issues: There may be misconfigurations in the RFC (Remote Function Call) settings or in the connection parameters that are leading to this error.
  Network Issues: There could be network connectivity issues preventing the systems from communicating properly.
  Version Compatibility: The versions of the systems may not be compatible, especially if you are trying to connect to a legacy system.
  
  Solution:
  
  Verify System Type: Ensure that the system you are trying to connect to is indeed an R/2 system. If it is not, you will need to adjust your approach accordingly.
  Check RFC Configuration: Review the RFC destination settings in transaction SM59 to ensure that they are correctly configured for the target system. Make sure that the connection type is appropriate for the system you are trying to connect to.
  Network Connectivity: Check the network settings and ensure that there are no firewalls or network issues preventing communication between the systems.
  Consult Documentation: Refer to SAP documentation for any specific requirements or configurations needed for connecting to R/2 systems.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  SAP R/2 vs. R/3: R/2 is an older mainframe-based system, while R/3 and S/4HANA are newer, client-server architectures. Understanding the differences can help in troubleshooting.
  Integration Scenarios: If you are trying to integrate R/3 or S/4HANA with R/2, consider using middleware or other integration tools that can facilitate communication between different SAP environments.
  SAP Community: Engaging with the SAP Community can provide insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.