eCommerce Inventory ‘Micro Cycle Counts’

I want to solicit some feedback for an eCommerce inventory control problem I once had:

Has anyone tried a ‘micro cycle count’ to solve physical inventory imbalances?

Let me explain…

I once had a huge discrepancy between my PI and inventory database. After doing two cycle counts each day I still could not locate the problem SKUs.

I decided to break down all merchandise into seven different categories, one category for each day of the week: (Service Parts, Monday; Accessories, Tuesday…