this is the process that i follow.
1.- Crearte a forecast (p3460) type BF.
2.- Run R3483.
3.- Check P3411. Only creates PO messages but Manufacting ítems doesnot creates a WO messages but only shows a messages taht says "leadtime is zero".
4.- Run R30822aLeadtimes roll up but it doesnot populate manufacturing leadtime.
i had check P41026- add info system but i dont know what to do beucause i follow the process to do it well.