What is an overstock calculation on the I.P. report ?

The overstock calculation is used to determine if there is excess product in a location other than the one you are buying for on the I.P. report.  The number of months tells Codis how many months sales to use for the calculation.

 

In other words, if warehouse 2 has 1000 pieces in stock of an item that they only sold 800 in the last 12 months (number of months used for overstock calculation) the I.P. report will show an overstock of 200 pieces in warehouse 2.

 

So, you can define the number of months sales to use for the calculation.  The default is 12 months.