Hi,
If you're asking about to include this field, I guess you can't because this information only has in the data master vendor and not avaiable for open or cleared line items.
This field is not in the OB32 or O7R3 tcodes.
I always recommend that you do queries if you don't want to modify some item. In this case you can do some query using BSIK and BSAK tables against LFB1 table. In the LFB1 table you can find personal number. Thus, with the vendor code you'll can check the personal number in the output query with line item wished.
Any questions, please, let me know.
JPA