If material is available in stock, then ATP confirms the quantity, then Material Substitution popup window should not display. Suppose if material not in stock & also ATP check returns with no stock then Material Substitution Popup should display.I foundout that it's checking conditions in MATERIAL_AUSWAHLLISTE_MIT_ATP(SAPMV45A). Also CALL Screen 800(SAPMV45A) Giving material substitution Popup screen.
I need put button in va01 screen if material substituiton is exist ,if user click that button then screen 800(SAPMV45a) Should display....(Menu exit can work)...
Current Config. giving this popup whenever enter material number without giving value to Quanity field .
Help please...... How can i achieve this?