It is very useful to be able to firm a planned PO to an existing one. But when I open that field "purchase order"on the planned order (supply tab), it should filter on the vendor of my planned PO. Right now it opens the entire PO list and one can easily make a mistake and buy something from another vendor then one intended. No warning message exists when you would make such a mistake. The functionality needs refinement 1- only display the PO's of the vendor that is mentioned on the planned order. 2 - when the planned order has no vendor, we would not firm it but suppose the user misses that. then we have no choice to show the entire PO list That is maybe sufficient . Small idea but big step forward for user friendiness