PO has trebled the line quantity from the requisition

Hi All,

I have a requisition that has 4 lines on it;

line 1 Qty of 3

line 2 Qty of 8

line 3 Qty of 4

line 4 Qty of 12

This has been autocreated into a Purchase Order and the 4 lines are:

line 1 Qty of 9

line 2 Qty of 24

line 3 Qty of 12

line 4 Qty of 36

Can anyone let me know of a possible reason that this has occured?

Thanks,

Karl