Dear Rick,
I use WC 6.05
I have 4 instances active on server for every application.
Sometime I get an error invonving only one instance.

Processing Error - https://crm.dea.group/Residenziale/EditInserimentoProdotti.wc?IdRecord=696567&PrevId=SCGGNN79A22E131F

<pre>
      Error: 1
    Message: File 'tabfamiglia.dbf' does not exist.
       Code: 
    Program: onload
    Line No: 190
     Client: 213.215.165.132
Post Buffer: 
</pre>
Exception Handled by: Residenzialeprocess.OnError()

Every instance has its own ID (1844 in the example):

Please, how to insert the instance ID in error message informations?
Thank you very much for support

The instance is the Process id. You can use the wwServer::GetProcessId() method to retrieve it.

wwServer::GetProcessId

+++ Rick ---

Many thanks again, Rick!