How To Fix SB306 - Error in remote connection to SAP system with destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SB - Version Management Messages

• Message number: 306

• Message text: Error in remote connection to SAP system with destination &1

What causes this issue?

An error occurred during RFC communication with a remote system. &V1&
was used as a destination (maintain destinations in transaction SM59).
Possible causes:
The remote system is not available.
The destination &V1& is no longer up-to-date.
The user name or password used for the logon is invalid.
Missing authorizations in the remote system.
Interface definitions that do not match.

System Response

No data was transmitted from or to the remote system.

How to fix this error?

Notify the system administration.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SB306 - Error in remote connection to SAP system with destination &1 ?

  The SAP error message SB306 indicates that there is an issue with the remote connection to an SAP system specified by the destination parameter (&1). This error can occur for various reasons, and understanding the cause and potential solutions can help resolve the issue.
  Causes of SB306 Error
  
  
  Network Issues: There may be network connectivity problems between the client and the SAP server. This could be due to firewalls, routing issues, or network outages.
  
  
  Incorrect Destination Configuration: The destination configuration in the SAP system (transaction code SM59) may be incorrect. This includes incorrect hostnames, ports, or connection types.
  
  
  Authorization Issues: The user may not have the necessary authorizations to access the remote system.
  
  
  SAP System Down: The target SAP system may be down or not reachable due to maintenance or other issues.
  
  
  RFC Configuration Issues: There may be issues with the Remote Function Call (RFC) configuration, such as missing or incorrect parameters.
  
  
  Version Compatibility: There may be compatibility issues between different versions of SAP systems.
  
  
  Solutions to SB306 Error
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to check if the target SAP system is reachable.
  Ensure that there are no firewall rules blocking the connection.
  
  
  
  Verify Destination Configuration:
  
  Go to transaction SM59 and check the configuration of the RFC destination.
  Ensure that the hostname, service (port), and connection type are correctly configured.
  Test the connection from SM59 to see if it is successful.
  
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to connect to the remote system.
  Check the roles and profiles assigned to the user.
  
  
  
  Check Target SAP System Status:
  
  Verify that the target SAP system is up and running.
  Check for any scheduled maintenance or downtime.
  
  
  
  Review RFC Configuration:
  
  Ensure that the RFC destination is set up correctly, including any required parameters.
  If using a secure connection (e.g., SNC), ensure that the configuration is correct.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SM21) and developer traces (transaction ST22) for any additional error messages that may provide more context.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  SICF: HTTP Service Hierarchy
  
  
  
  SAP Notes: Always check the SAP Support Portal for the latest notes related to your specific version of SAP and the error message.
  
  
  Documentation: Refer to the official SAP documentation for detailed information on configuring RFC connections and troubleshooting connectivity issues.
  
  
  By following these steps, you should be able to identify and resolve the cause of the SB306 error in your SAP environment.