update VBAP fields

Hi all,

We are developing one custom program for creating the inquiry, my requirement is to update two extra values (field type is Quantity) (SOH, Safety Stock) for each line item in VBAP table, and we have to use these two values while Creating the custom sales order.

I need, which existing fields in VBAP can be used to update the two extra values, instead of adding new fields to VBAP.

Regards,

Nagesh