Lookup provides notifications about validations finished asynchronously. They are sent for all completed single and batch validations if they required any background processing (requested single/batch validation has "status": "running").
Events ("event_type" in the webhook body):
lookup.single_validation_completed
lookup.single_validation_completedresource_idis a single validation IDresource_urlpoints to the single validation results
lookup.batch_validation_completed
lookup.batch_validation_completedresource_idis a batch validation IDresource_urlpoints to the batch validation results