The Route Shape is unable to recognize null values. If a document with a null value is sent into a route shape, there are several methods that should be able to recognize a null value, but nothing seems to work.
The Route Shape will route successfully if values are supplied. Instead of using the Route shape to route based on a null value, try using a Decision shape instead.
To compare a null value:
- Select the desired Profile Element field for the First Value
- Set Comparison to Equal To
- For the Second Value, choose Static Value and leave the value field blank