BUS2081 create invoice or credit advice from blocked price items

Hi experts,

I've modeled a workflow based on BUS2081. I would like to create an invoice or a credit advice with the blocked price items I get from the incoming invoice. I'm able to create activities to see these items with the method ListBlockedPriceItemdata or to start the MIRO. But I have no idea how to get this list items in the MIRO. Any hints for me?

Thanks

Sandro