Table for "Sales Order" value on t-code MMBE

Hey guys,

I'm trying to retrieve the value Sales Order, from t-code MMBE:

When trying to map the field, I obtain the following structure:

RMMMBESTN_DATEN - VBMNC

I have tried to retrieve that value, from all the standard tables (MARD, MARC, and all of the tables related with Stock).

My question is, is this value calculated as a dynamic value, or is it stored on a table.

If the value is dynamic, where do I get the values to perform the mathematical operation embeded with it?

I appreciate your help!!

Kind regards,

gabmillan10