How To Fix COOPC401 - Error while reading OPC item &1; see long text

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 401

• Message text: Error while reading OPC item &1; see long text

What causes this issue?

The system tried to read the current value of the
<DS:GLOS.D39F4241B0CAD411B11B0008C784EFB1>OPC item</> &V1& that is
defined in plant &V3& on the
<DS:GLOS.81831343B0CAD411B11B0008C784EFB1>OPC server</>. However, an
internal error occured that cannot be specified any further.

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?

You can try to correct the error by carrying out the following steps:
Test the connection to the RFC destination &V2& in Customizing.
To do so, go to Customizing for <LS>Production Planning - Process
Industries</> and choose <LS>Process Management</> -> <LS>SAP ODA (OPC
Data Access)</> -> <DS:SIMG.COOPC120>Define Settings for SAP ODA</>.
Try to access the OPC server via any
<DS:GLOS.34FECE44B0CAD411B11B0008C784EFB1>OPC client</> from another
vendor.
If this is possible, there is probably a program error in the SAP
system. Contact SAP.
If this is not possible, there is probably an error on the OPC server.
Contact the OPC server vendor.

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 COOPC401 - Error while reading OPC item &1; see long text ?

  The SAP error message COOPC401 typically indicates an issue related to the reading of an OPC (OLE for Process Control) item. This error can occur in scenarios where SAP is trying to access data from an OPC server, and it encounters a problem with the specified OPC item.
  Cause:
  The error can be caused by several factors, including:
  
  Invalid OPC Item Name: The OPC item specified may not exist or may be incorrectly named.
  OPC Server Connection Issues: There may be connectivity issues between SAP and the OPC server.
  Permissions: The user or service account may not have the necessary permissions to access the OPC item.
  Configuration Issues: The OPC server may not be properly configured to expose the requested item.
  Network Issues: There may be network-related problems preventing communication with the OPC server.
  
  Solution:
  To resolve the COOPC401 error, you can take the following steps:
  
  Verify OPC Item Name: Check the name of the OPC item you are trying to access. Ensure it is spelled correctly and exists in the OPC server.
  Check OPC Server Status: Ensure that the OPC server is running and accessible. You can use tools like OPC Client applications to test connectivity.
  Review Permissions: Ensure that the user account under which SAP is running has the necessary permissions to access the OPC item.
  Check Configuration: Review the configuration of the OPC server to ensure that the item is correctly configured and available for access.
  Network Troubleshooting: If there are network issues, check firewalls, network settings, and ensure that the SAP system can reach the OPC server.
  Consult Logs: Check the SAP application logs and the OPC server logs for any additional error messages or warnings that could provide more context about the issue.
  
  Related Information:
  
  SAP Documentation: Refer to the SAP Help Portal for documentation related to OPC integration and troubleshooting.
  OPC Specifications: Familiarize yourself with the OPC specifications and guidelines to ensure proper configuration and usage.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues or provide patches related to OPC integration.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or the vendor of the OPC server for further assistance.