Situation on Fixed bin:
Total Stock: 40
Available Stock: 5
-> so physically, there are still 40 PCE on the fixed bin (of which 35 have picking-TOs created and are "soon" to be picked).
-> the total stock reflects the pysical quantity.
As there are 40 PCE on the bin right now physically, another 40 (repl. quantity) will not fit in there.
This is, why I think LP21 shold NOT create a replenishment in that case.