Hi,
I have a requirement to add Purchase Request items to already open Purchase Orders via ABSL scripts in the Cloud Application studio. There is an action button to do this in the UI:

There is an action on the PurchaseRequest.Item node which we expect is the right one:

But when we try to use it we get different calling patterns from the autocomplete (one indicates two calling parameters and the other just one):


And regardless of what parameters we set there are validation errors "Method or action 'LinkPOWithPrItems' is not permitted":

Any advice on how can we achieve this action from ABSL scripts would be much appreciated, thanks!
//Carl