Badi or user exit for Backflush component on order confirmation

Hi all,

By a production order confirmation I need to recalculate the quantities needed for Backflush components.

There is a BADI WORKORDER_GMVT BACKFLUSH. I tried it, but at this point it is too late for me, as the Batch determination is allready done.

I need to recalculate the quantities BEFORE the batch determination.

Any Idea ?

Thanks

Fred