How To Fix EM303 - Error with set up connection to remote system &1 (see long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 303

• Message text: Error with set up connection to remote system &1 (see long text)

What causes this issue?

An error occurred while attempting to establish a remote connection
with RFC destination &V1&.
The error text is: &V2& &V3&

System Response

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

How to fix this error?

Check the availability of the RFC destination.

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 EM303 - Error with set up connection to remote system &1 (see long text) ?

  The SAP error message EM303 typically indicates an issue with establishing a connection to a remote system. This error can occur in various contexts, such as when trying to connect to an external database, a remote SAP system, or during the execution of certain transactions that require communication with another system.
  Cause:
  The causes of the EM303 error can vary, but common reasons include:
  
  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 lead to connection failures.
  Authorization Issues: The user or service account may not have the necessary permissions to access the remote system.
  Service Availability: The remote system may be down or not reachable due to maintenance or other issues.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection to the remote system.
  Incorrect Connection Parameters: The connection parameters (like hostname, port, etc.) may be incorrectly specified.
  
  Solution:
  To resolve the EM303 error, you can follow these steps:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the SAP system can reach the remote system.
  Ensure that there are no network outages or issues.
  
  
  
  Review Configuration Settings:
  
  Check the connection settings in the SAP system (e.g., RFC destination settings in transaction SM59).
  Ensure that the connection parameters (hostname, port, etc.) are correct.
  
  
  
  Verify User Authorizations:
  
  Ensure that the user or service account being used to connect has the necessary authorizations on both the SAP and remote systems.
  
  
  
  Check Remote System Status:
  
  Verify that the remote system is up and running and that the required services are active.
  
  
  
  Firewall and Security Settings:
  
  Check firewall settings to ensure that they allow traffic between the SAP system and the remote system.
  Consult with your network/security team if necessary.
  
  
  
  Review SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Consult Logs:
  
  Review the application logs and system logs in both the SAP system and the remote system for any additional error messages or clues.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59 (RFC Destinations) for checking and configuring remote connections.
  SM21 (System Log) for reviewing system logs.
  ST22 (Dump Analysis) for checking for any ABAP runtime errors that may be related.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for detailed information on configuring remote connections and troubleshooting connectivity issues.
  
  
  If the issue persists after following these steps, it may be beneficial to engage with SAP support or your internal IT team for further assistance.