Using Record/Replay snaps with Ultra pipelines

How do I get Record/Replay snaps to work with Ultra pipelines correctly? I have a basic pipeline that with a Record/Replay snap at the head, and an Ultra task running on the pipeline:

The Dashboard view indicates that the pipeline is up and running and the Record/Replay snap is receiving documents correctly?

However, as the first screenshot illustrates, when I try to validate the pipeline, the Record/Replay snap gives an error. The documentation (here https://docs-snaplogic.atlassian.net/wiki/spaces/SD/pages/1439285/Record+Replay) suggests:

“This Snap records the input documents from Triggered or Ultra Task requests and replays them in Designer so that you can work with real preview data. When developing a new triggered or Ultra pipeline, you should create a pipeline with this Snap at the head, create the task, and send a sample request to the task to be recorded. Note that for an Ultra Task, you should disable the task so that the recording can be saved. Now that there is a recording saved, you can continue to develop your pipeline with real data.”

It’s unclear to me how the a document can be sent to a disabled Ultra task, such that the recording would be saved? Can someone clarify what I can do to get the Record/Replay pipeline to work correctly?

Thanks,

Omair