Siebel EAI Workflow Error handling Expression for Null Process Property

During the Siebel EAI integration process there will be some scenarios of error logging in workflow process based on the response from the external system. Instead of having the additional attributes/columns in the error logging table, you can utilize only the Error code and Error Message columns to pass both the Workflow errors as well as error response from external system.

As you can see in the below in the expression editor, you can check if there is any workflow error by checking on the default process property Error Code, if not pass the process property you have created to hold the response message in the same workflow.

This way you can utilize the same columns for multiple purpose instead of keeping null if the error is otherwise. 

The ampersand (&) identifies the text that immediately follows the ampersand as the name of a process property