How To Fix TA157 - Remote connection cannot be set up

SAP Error Message - Details

• Message type: E = Error

• Message class: TA - Extended table maintenance (eval., Customizing, client copy)

• Message number: 157

• Message text: Remote connection cannot be set up

What causes this issue?

The RFC connection cannot be set up.

How to fix this error?

Check the RFC connection with the transaction SM59.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TA157 - Remote connection cannot be set up ?

  The SAP error message TA157, which states "Remote connection cannot be set up," typically indicates an issue with establishing a connection to a remote system. This can occur in various scenarios, such as when trying to connect to a remote SAP system, a database, or an external service.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the remote system.
  Configuration Errors: Incorrect configuration settings in the SAP system or the remote system can prevent a successful connection.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection.
  Incorrect Credentials: The user credentials or connection parameters (like hostname, port, etc.) may be incorrect.
  Service Availability: The remote service or system may be down or not available.
  SAP Router Issues: If using an SAP router, there may be issues with the router configuration or availability.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the SAP system can reach the remote system.
  Ensure that the network is stable and that there are no outages.
  
  
  
  Review Configuration Settings:
  
  Check the RFC destination settings in transaction SM59 for any misconfigurations.
  Ensure that the connection parameters (like hostname, service name, and client) are correct.
  
  
  
  Firewall and Security Settings:
  
  Verify that firewalls are not blocking the required ports for the connection.
  Ensure that any security settings allow the connection to be established.
  
  
  
  Validate Credentials:
  
  Double-check the user credentials being used for the connection.
  Ensure that the user has the necessary authorizations to access the remote system.
  
  
  
  Check Remote System Availability:
  
  Confirm that the remote system is up and running and that the required services are active.
  If applicable, check logs on the remote system for any errors.
  
  
  
  SAP Router Configuration:
  
  If using an SAP router, ensure that it is correctly configured and operational.
  Check the router logs for any errors or issues.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to TA157.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59: To manage RFC destinations.
  SICF: To check and manage HTTP services.
  ST22: To check for dumps that may provide more context on the error.
  
  
  
  Logs: 
  
  Check the system logs (SM21) and developer traces (ST11) for additional error messages that may provide more insight.
  
  
  
  Documentation: 
  
  Refer to SAP Help documentation for detailed information on configuring remote connections and troubleshooting connectivity issues.
  
  
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with your SAP Basis team or consult SAP support for further assistance.