Incrementing PO qty due to rescheduling/BOP

Hi Gurus,

I'm having this issue that a PO line item is being changed by BOP/rescheduling and incrementing certain number of qty from its original value.

As can be seen in the screen shot attached, CIFERPUSR has rescheduled and at the same time, increased the number of PO qty.

Any inputs are welcome.

thanks in advance!

Zeek.