Hi all,
we sort it. We have to change this ActionInstance(874d617d-edc4-4a4b-83e1-848a3836ecd5) in this: ActionInstance(874d617dedc44a4b83e1848a3836ecd5).
The issue is that the first one is the valid instance identifier that we receive from eloqua at creation time.
We hope that this could be helpful for other developers.
Cheers,
Alessandro