Error BO "AllocatedChecklist" for HSDL: You must provide a valid reference to the parent record.

Hi team,
we are trying to build a HSDL to mark as "Complete" a task in a Journey.
We are displaying this error: "You must provide a valid reference to the parent record. Ensure that the parent record is supplied in the same file, or has already been created. You can reference the parent record using one of the four supported key types. The View Business Objects task lists the attributes that you can use to identify the parent record for this component."

We are design the HSDL as following:

Where could I take in action?

Thanks in advance