fail

fail(message: String = 'Error'): Nothing

Throws an exception with the specified message.

Parameters

Name Description

Name	Description
`message`	An error message (`String`).

message

An error message (String).

Example

This example returns a failure message Data was empty because the expression (sizeOf(myVar) <= 0) is true. A shortened version of the error message is shown in the output.

Source

%dw 2.0
import * from dw::Runtime
var result = []
output application/json
---
if(sizeOf(result) <= 0) fail('Data was empty') else result

Output

ERROR 2018-07-29 11:47:44,983 ...
*********************************
Message               : "Data was empty
...