How To Fix /SMB/TRANSP_INFRA029 - RFC &1 destination not reachable.&2&3&4

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/TRANSP_INFRA -

• Message number: 029

• Message text: RFC &1 destination not reachable.&2&3&4

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

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.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SMB/TRANSP_INFRA029 - RFC &1 destination not reachable.&2&3&4 ?

  The SAP error message /SMB/TRANSP_INFRA029 RFC &1 destination not reachable.&2&3&4 indicates that there is an issue with the Remote Function Call (RFC) destination specified in the error message. This typically means that the system is unable to connect to the specified RFC destination, which can be due to various reasons.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system.
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system.
  Target System Down: The target system may be down or not available.
  Firewall Restrictions: Firewalls may be blocking the connection to the target system.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or telnet to check if the target system is reachable from the SAP system.
  Ensure that there are no network outages or issues.
  
  
  
  Verify RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination mentioned in the error message.
  Ensure that the connection type, target host, and system number are correctly configured.
  
  
  
  Check Target System Status:
  
  Ensure that the target SAP system is up and running.
  If it is down, coordinate with the system administrators to bring it back online.
  
  
  
  Review Firewall Settings:
  
  Check if there are any firewall rules that might be blocking the connection to the target system.
  Work with your network/security team to ensure that the necessary ports are open.
  
  
  
  Validate User Credentials:
  
  Ensure that the user credentials used for the RFC connection are correct and have the necessary authorizations.
  Test the connection in SM59 to see if it works with the provided credentials.
  
  
  
  Check SAP Gateway:
  
  Ensure that the SAP Gateway service is running on both the source and target systems.
  You can check the status of the gateway using transaction SMGW.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer traces (transaction ST22) for any additional error messages that might provide more context.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  SMGW: Gateway Monitor
  
  
  
  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 RFC destination to be unreachable.