How To Fix S#435 - Destination & is not defined as a "trusted system" -> Long text

SAP Error Message - Details

• Message type: E = Error

• Message class: S# -

• Message number: 435

• Message text: Destination & is not defined as a "trusted system" -> Long text

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message S#435 - Destination & is not defined as a "trusted system" -> Long text ?

  The SAP error message S#435 indicates that a destination is not defined as a "trusted system." This typically occurs in scenarios where you are trying to establish a connection between different SAP systems, such as when using RFC (Remote Function Call) or when setting up a connection for Single Sign-On (SSO).
  Cause:
  The error arises when the target system (the system you are trying to connect to) is not recognized as a trusted system by the source system (the system from which the connection is initiated). This can happen due to several reasons:
  
  The destination is not configured correctly in the SAP system.
  The trust relationship between the two systems has not been established.
  The necessary authorizations or configurations for the connection are missing.
  
  Solution:
  To resolve this issue, you can follow these steps:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction code SM59 in the source system.
  Locate the RFC destination that you are trying to use.
  Ensure that the destination is configured correctly, including the connection type and target host.
  
  
  
  Define Trusted System:
  
  In the source system, go to transaction code SM59.
  Select the RFC destination and click on "Technical Settings."
  Ensure that the "Trusted System" checkbox is checked if you want to establish a trust relationship.
  If it is not checked, you may need to configure the destination as a trusted system.
  
  
  
  Set Up Trust Relationship:
  
  In the source system, go to transaction code SICF.
  Navigate to the "Services" section and ensure that the service for the target system is activated.
  You may also need to set up a trust relationship using transaction STRUST to manage SSL certificates and trust settings.
  
  
  
  Check User Authorizations:
  
  Ensure that the user you are using to connect has the necessary authorizations in both the source and target systems.
  Check roles and profiles assigned to the user to ensure they have access to the required transactions and RFC connections.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to trusted systems and RFC connections for more detailed guidance.
  
  
  
  Related Information:
  
  RFC (Remote Function Call): A protocol used to enable communication between SAP systems.
  Trusted System Configuration: Involves setting up a trust relationship between SAP systems to allow secure communication without requiring user credentials for each call.
  Single Sign-On (SSO): A method that allows users to authenticate once and gain access to multiple systems without re-entering credentials.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis team or consulting SAP support for further assistance.