How To Fix OT016 - Error with remote connection to SAP system &1 (destination &2): &3&4

SAP Error Message - Details

• Message type: E = Error

• Message class: OT - SAP Online Correction Support (SOCS)

• Message number: 016

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

What causes this issue?

An error occurred during RFC communication with SAP system &V1&. The
message returned by the RFC interface says:
&V2&&V3&&V4&

System Response

No data transferred from or to remote system &V1&.
WHAT_TO_DO&
Inform your system administrator if required.

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 OT016 - Error with remote connection to SAP system &1 (destination &2): &3&4 ?

  The SAP error message OT016 indicates that there is an issue with a remote connection to an SAP system. This error typically arises when there is a problem with the configuration of the RFC (Remote Function Call) destination or when there are connectivity issues between the systems.
  Causes of OT016 Error
  
  
  Incorrect RFC Destination Configuration: The RFC destination may not be set up correctly in the SAP system. This includes incorrect parameters such as the target system's hostname, system number, client, user credentials, etc.
  
  
  Network Issues: There may be network connectivity problems between the SAP systems. This could be due to firewalls, network outages, or incorrect routing.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the target system.
  
  
  Target System Down: The target SAP system may be down or not reachable due to maintenance or other issues.
  
  
  SAP Gateway Issues: The SAP Gateway service may not be running on the target system, or there may be issues with the gateway configuration.
  
  
  Solutions to OT016 Error
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination that is causing the issue.
  Verify the configuration settings, including the target host, system number, client, and user credentials.
  Test the connection using the "Connection Test" button.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing communication between the systems.
  Check if you can ping the target system from the source system.
  Verify firewall settings to ensure that the necessary ports are open for SAP communication.
  
  
  
  User Authorizations:
  
  Check the user credentials used for the RFC connection.
  Ensure that the user has the necessary authorizations in the target system.
  
  
  
  Check Target System Status:
  
  Verify that the target SAP system is up and running.
  Check for any scheduled maintenance or downtime.
  
  
  
  SAP Gateway Configuration:
  
  Ensure that the SAP Gateway service is running on the target system.
  Check the gateway logs for any errors that might indicate issues.
  
  
  
  Review Logs:
  
  Check the system logs (SM21) and the developer traces (ST22) for any additional error messages that might provide more context about the issue.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  SICF: Maintain HTTP Services (for web-based connections)
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to OT016.
  
  
  Documentation: Review SAP documentation on RFC connections and troubleshooting connectivity issues.
  
  
  By following these steps, you should be able to diagnose and resolve the OT016 error effectively. If the problem persists, consider reaching out to your SAP Basis team or SAP support for further assistance.