Is Null
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With the Is Null action node, you can verify whether a variable exists (i.e., is it a real value or a NULL value) and define what action follows - either route the customer to a new step in the workflow or trigger a new workflow.
For example, you can verify whether an expected response parameter from an API is available in the response received.
This node is typically used after an node to check whether a variable exists within the returned payload.
