How To Fix /SAPAPO/ATP027 - Error in establishing RFC destination to logical system &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 027

• Message text: Error in establishing RFC destination to logical system &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/ATP027 - Error in establishing RFC destination to logical system &1 ?

  The SAP error message /SAPAPO/ATP027 indicates that there is an issue with establishing a Remote Function Call (RFC) connection to a specified logical system. This error typically occurs in the context of Advanced Planning and Optimization (APO) when the system is trying to communicate with another SAP system or logical system.
  Causes:
  
  Incorrect RFC Destination Configuration: The RFC destination may not be correctly configured in the SAP system.
  Network Issues: There may be network connectivity issues preventing the systems from communicating.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  Logical System Not Defined: The logical system you are trying to connect to may not be defined in the system.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  Firewall Restrictions: Firewalls may be blocking the communication between the systems.
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 and check the configuration of the RFC destination that corresponds to the logical system mentioned in the error message.
  Ensure that the destination is correctly defined and that the connection type is appropriate (e.g., TCP/IP).
  
  
  
  Test the RFC Connection:
  
  In transaction SM59, select the RFC destination and use the "Test Connection" option to verify if the connection can be established successfully.
  
  
  
  Check Logical System Configuration:
  
  Ensure that the logical system is defined in transaction BD54 and that it is correctly assigned to the client.
  
  
  
  Review User Authorizations:
  
  Check the user credentials used for the RFC connection and ensure that they have the necessary authorizations to perform the required actions.
  
  
  
  Network and Firewall Configuration:
  
  Verify that there are no network issues or firewall restrictions that could be preventing the connection. Ensure that the necessary ports are open for communication.
  
  
  
  Check SAP Gateway:
  
  Ensure that the SAP Gateway service is running properly. You can check this in transaction SMGW.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction SM21) for any additional error messages that might provide more context about the issue.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  BD54: Logical System Configuration
  SMGW: SAP Gateway Monitor
  SM21: System Log
  
  
  
  Documentation: Refer to SAP Help documentation for more details on configuring RFC destinations and troubleshooting connectivity issues.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the /SAPAPO/ATP027 error message. If the problem persists, consider reaching out to your SAP Basis team or SAP support for further assistance.