MRP - no results when i run calculation

Hello, we are evaluating axelor 6.0.3 and have a problem with the MRP in stock management.
We have added several products, semi-finished products, components, BOM lists and manufacturing processes. One product require the manufacturing of several other products. When we try to generate MRP calculation on this product there are never any results.
What are we missing?

also is there a updated documentation for version 6.0 ? it seems there are quite some changes in terminology compared to version 5