How To Fix COOPC402 - Error while writing OPC item &1; see long text

COOPC402 - Overview

• Message type: E = Error

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

• Message number: 402

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

What causes this issue?

The system tried to write a value to the OPC item &V1& that is defined
in plant &V2&. However, an internal error occurred 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 an 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 COOPC402 - Error while writing OPC item &1; see long text ?

  The SAP error message COOPC402 typically indicates an issue related to the OPC (OLE for Process Control) interface when trying to write to an OPC item. This error can occur in various scenarios, often related to configuration or communication issues between SAP and the OPC server.
  
  Cause:
  
  
  Configuration Issues: The OPC item may not be correctly configured in the SAP system or the OPC server.
  Network Issues: There may be network connectivity problems between the SAP system and the OPC server.
  Permissions: The user or service account may not have the necessary permissions to write to the OPC item.
  Item Availability: The OPC item may not be available or may not exist in the OPC server.
  Data Type Mismatch: There may be a mismatch between the data type expected by the OPC item and the data being sent from SAP.
  
  
  Solution:
  
  Check Configuration: Verify the configuration of the OPC item in both SAP and the OPC server. Ensure