Release 10.1A: OpenEdge Development:
Open Client Introduction and Programming

Server-side errors before remote 4GL method execution

Progress returns all server-side errors to the client that occur before any remote procedure is executed. An example of this type of server-side error is where the client tries to execute a remote procedure that does not exist. Generally, both the client and AppServer can resume normal execution.

Progress also returns all network connection and authentication errors; for example, if an HTTP connection cannot be made, authentication cannot be established with the Web server, or the AIA is not installed and configured properly.