SAP WM Annual Physical Inventory creating only 1 PI doc with 800+ quants

Hi - I americium utilizing tcode LI01N (WM - not IM) to make a yearly carnal inventory (inventory method "ST") - I privation to number 1 mixed usage bin and americium getting 1 pi doc (with 800+ quants)

In configuration we have  - Logistics Execution> Warehouse Management> Activities> Physical Inventory> Define Differences and Document Limits ...document items acceptable to 100 (field MINPS). 

Anyone cognize what triggers LI01N to make aggregate PI docs per MINPS similar SAP assistance seems to bespeak it will?

Janet