SAP 6.0 - is not droping-down any list in the Material Goup field

Hi al,

I have this issue when I use ME21N transaction.

If I go to the material group section of a purchase order the bubble that enables accessing the material group list is not appearing

I tried to use F4 but it is not helping me. I pressed F4 in the Plant field and it drops-down the list successfully. Unfortunately F4 is not droping-down any list in the Material Group field.

I think there is something wrong in my SAP account. Before SAP upgrade everything was working fine on my accountu2026

Do you think that you still need to view the SAP appl. on my end?

Thanks!