Skip Fault due to Empty value in Assign activity

In many scenarios we use Assign activity and copy from variable to the target variable.
But we do see exception when there is no value from the source variable.

Non Recoverable System Fault :

faultName: {{http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure} messageType: {{http://schemas.oracle.com/bpel/extension}RuntimeFaultMessage}

It may seem weird instead of skipping to next activity we should handle it in Catch block, or Instead we skip to use Transform activity instead.

But there is a way you can ignore this.

If you are not sure if there would be a value coming or not and you still want to handle it in xpath(Assign activity) you need to do the following.

1)

Open the Assign Activity :

2)

Right click on the block beside the source variable and click on ignoreMissingFromData

Redeploy the process and you should no longer see the error.