Crossdocking

Hi,

I have some clarifications regarding the cross dock PO.

We create the STO from DC to store with ME21N which creates a PO 43********. In WF10 we generate the external PO to the vendor 45*********. These mightbe basic questions, but I am very new to this process.

If I need to add a new article/material to this order for the same store/site/plant, where do I add it? In the STO or the external PO? How do I regenerate the link to add this to the same external PO to vendor?

If I need to delete a material where do I do it? In the STO or external PO or Both.