F-03 Sales Order not displayed

Dear Friends,

Does anyone knows how to display the content of the field “Sales order” in F-03?

Program (SAPDF05X) / Screen  3100

I have added “Sales order” field in O7Z4  (RFOPS/VBEL2).

The field now comes up in the screen, however sales order number does not populate despite the G/L gets one sales order.

While working with F.13 I am able to see sales order number for the same G/L account when I configure VBEL2 as additional rule for automatic clearing (SAPF124).

Thanks for your quick help