How To Fix SB300 - Error in remote connection to SAP system &1 (destination &2): &3&4

SAP Error Message - Details

• Message type: E = Error

• Message class: SB - Version Management Messages

• Message number: 300

• Message text: Error in remote connection to SAP system &1 (destination &2): &3&4

What causes this issue?

An error occurred during RFC communication with the SAP system &V1&.
&V2& was used as a destination (maintain destinations in transaction
SM59). The message returned by the RFC interface is:
&V3&&V4&

System Response

No data was transmitted from or to the remote system.

How to fix this error?

Notify the system adminstration.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SB300 - Error in remote connection to SAP system &1 (destination &2): &3&4 ?

  The SAP error message SB300 indicates that there is an issue with the remote connection to an SAP system. This error can occur for various reasons, and understanding the cause is essential for troubleshooting. Here’s a breakdown of the potential causes, solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems between the client and the SAP server.
  Incorrect Configuration: The destination configuration in the SAP system (transaction SM59) may be incorrect or incomplete.
  Authorization Issues: The user may not have the necessary authorizations to connect to the remote system.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  Firewall Restrictions: Firewalls may be blocking the connection to the SAP system.
  System Availability: The target SAP system may be down or not available.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the network connection to the target SAP system is functioning correctly.
  
  
  
  Verify Destination Configuration:
  
  Go to transaction SM59 and check the configuration of the RFC destination. Ensure that the connection parameters (like the target host, system number, and client) are correct.
  
  
  
  Check User Authorizations:
  
  Ensure that the user ID being used to connect has the necessary authorizations in both the source and target systems.
  
  
  
  Review SAP Gateway Configuration:
  
  Check if the SAP Gateway is running on the target system. You can do this by using transaction SMGW to monitor the gateway.
  
  
  
  Firewall Settings:
  
  Ensure that any firewalls between the systems allow traffic on the required ports (typically port 3200 for SAP).
  
  
  
  System Status:
  
  Verify that the target SAP system is up and running. You can check this by logging into the system directly or using transaction SM51 to see the list of active instances.
  
  
  
  Check Logs:
  
  Review 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: RFC Destination Configuration
  SMGW: SAP Gateway Monitor
  SM21: System Log
  ST22: Dump Analysis
  SM51: List of Active Instances
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to SB300 errors. You can search the SAP Support Portal for notes related to your specific version of SAP.
  
  
  Documentation: Refer to the official SAP documentation for more 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 SB300 error in your SAP environment.