Track of Change in consumption material quantities for subcontracting P.O.

Hello,

As we know that at the time of Goods receipt for Subcontracting P.O., the componants get consumed as per the BOM or the same mentioned in P.O.Sometimes end user change the consumption material quantity at the time of goods receipt and there will be under or over consumption of componanats.

How to keep the track of such change in mateial quatities viz the user who changed it and the quantities changed. Is there any table which stores such data.

Thanks & Regards,

Sandeep