We have an issue with a Prepaid Freight condition(ZF07) which is Manual item condition type. Business had added the condition type in SO and maintained a value. The PDF copy of an Invoice was taken in the March Month of this year which was having a value "X". When the same pdf copy of Invoice was taken in the current Month which is showing the value as "Y" which is exactly the half of the X value.
We have checked the change log and there were no changes made either in Sales order or Invoice.
Please let us know how can this happen.