RESB(Reservation/dependent requirements) table (Reference table & Ref. Field)

Hi Gurus,

We have RESB table in ECC system.

RESB table has many reference fields, for example RESB table has field NOMNG(Quantity) and its reference  field is MARA-MEINS.

Now when i display the data in RESB table, it does not show the MARA-MEINS.

In the table display we have NOMNG(Quantity) field but not its unit (MARA-MEINS).

I need to take the data in this table to BW system, but i am not able identify the unit of this NOMNG(Quantity) field.

Please share the inputs.

Note - We have MEINS field present in the RESB table, but i don't know why this field is not being used as reference field for

          NOMNG(Quantity)