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

COOPC203 - Overview

• 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