How To Fix COOPC203 - Unable to find OPC servers on target host

SAP Error Message - Details

• Message type: E = Error

• Message class: COOPC - Messages for SAP-OPC Integration

• Message number: 203

• Message text: Unable to find OPC servers on target host

What causes this issue?

When executing <DS:GLOS.48FBD83B57CBD411B11B0008C784EFB1>OPC server
browsing</> on the target host with the
<DS:GLOS.3526AFF8AFAB52B9E10000009B38F974>RFC</> destination &V1&, no
<DS:GLOS.81831343B0CAD411B11B0008C784EFB1>OPC servers</> were found.
This may be due to the following reasons:
The RFC destination you specified was not correct.
No OPC servers are installed.
The OPC server installation contains errors, for example, the registry
may be inconsistent.

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 whether:
The correct RFC destination was specified
OPC servers are correctly installed on the target host

Procedure for System Administrators

&HINTS&
Note that during server browsing the
<DS:GLOS.9E1CCF44B0CAD411B11B0008C784EFB1>SAP ODA Connector</> only
reads the registry of the target host. It does <ZK>not</> check whether
the OPC servers found can actually be started. For this reason, OPC
servers may be listed that are still entered in the registry but cannot
be operated.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message COOPC203 - Unable to find OPC servers on target host ?

  The SAP error message COOPC203: Unable to find OPC servers on target host typically indicates that the SAP system is unable to connect to the specified OPC (OLE for Process Control) server on the target host. This can occur for several reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  OPC Server Not Installed or Running: The OPC server may not be installed on the target host, or it may not be running.
  Network Issues: There could be network connectivity issues between the SAP system and the target host where the OPC server is located.
  Incorrect Configuration: The configuration settings in SAP for the OPC connection may be incorrect, such as the hostname, port number, or security settings.
  Firewall Restrictions: A firewall may be blocking the communication between the SAP system and the OPC server.
  Permissions Issues: The user account under which the SAP system is running may not have the necessary permissions to access the OPC server.
  OPC Server Configuration: The OPC server itself may not be configured to accept connections from the SAP system.
  
  Solutions:
  
  Check OPC Server Installation: Ensure that the OPC server is installed on the target host and is currently running. You can check this by accessing the server directly.
  Verify Network Connectivity: Use tools like ping or telnet to check if the SAP system can reach the target host and the specific port used by the OPC server.
  Review Configuration Settings: Double-check the configuration settings in SAP for the OPC connection. Ensure that the hostname, port, and any other parameters are correctly set.
  Firewall Configuration: If there is a firewall in place, ensure that it allows traffic on the port used by the OPC server. You may need to consult with your network administrator to adjust firewall settings.
  Check User Permissions: Verify that the user account running the SAP system has the necessary permissions to access the OPC server. This may involve checking both the SAP and OPC server configurations.
  OPC Server Logs: Review the logs of the OPC server for any error messages or indications of why the connection might be failing.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for specific details on configuring OPC connections and troubleshooting related issues.
  OPC Server Documentation: Check the documentation for the specific OPC server you are using, as it may provide insights into common issues and configuration settings.
  SAP Notes: Search the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or your OPC server vendor for further assistance.