How To Fix B1065 - Connection to other system could not be established

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 065

• Message text: Connection to other system could not be established

What causes this issue?

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

System Response

How to fix this error?

The possible causes are as follows:
There is a technical reason why the partner system cannot be accessed.
Note: you can test whether the communication is working technically in
the definition of an RFC destination.
The function module which was called does not exist on the other system.
This usually happens only if the partner system is an external system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1065 - Connection to other system could not be established ?

  The SAP error message B1065, which states "Connection to other system could not be established," typically indicates that there is an issue with the communication between your SAP system and another system (which could be another SAP system or a non-SAP system). This error can arise due to various reasons, and here are some common causes, potential solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the two systems. This could be due to firewalls, routing issues, or network outages.
  Configuration Errors: Incorrect configuration settings in the RFC (Remote Function Call) destination or in the SAP system settings can lead to this error.
  Authorization Issues: The user credentials used for the connection may not have the necessary authorizations to access the target system.
  Service Availability: The target system may be down or not available for connections.
  Incorrect Hostname or IP Address: The hostname or IP address specified in the RFC destination may be incorrect.
  Protocol Mismatch: There may be a mismatch in the communication protocols being used (e.g., HTTP vs. HTTPS).
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the target system is reachable from the source system.
  Ensure that there are no firewall rules blocking the connection.
  
  
  
  Verify RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination.
  Ensure that the connection type, target host, and system number are correctly configured.
  
  
  
  Test the Connection:
  
  In transaction SM59, select the RFC destination and use the "Connection Test" option to check if the connection can be established successfully.
  
  
  
  Check User Authorizations:
  
  Ensure that the user credentials used for the connection have the necessary authorizations in both the source and target systems.
  
  
  
  Check Target System Availability:
  
  Verify that the target system is up and running. You can check the system logs or contact the system administrator.
  
  
  
  Review Logs:
  
  Check the SAP system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages that may provide more context.
  
  
  
  Consult Documentation:
  
  Review SAP Notes and documentation related to the specific error message for any additional troubleshooting steps or patches.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  System Administrator: If the issue persists, it may be beneficial to involve your system administrator or SAP Basis team for further investigation.
  
  By following these steps, you should be able to identify and resolve the cause of the B1065 error message in your SAP environment.