Unless it has changed in the past year, the following prevent the count from changing;
1) Protected Item - typically this is on the PITL count log the AP team does, most of these items won't change unless you submit a count adjustment
2) Received in the past 24 hours. If the item was acknowledged or recd in the past 24 hours the count will not change.
3) On an upcoming active DCI, if there is an active DCI with the item the count will not change (this happens when it's truck day but the truck doesn't show up)
4) A difference of more than $100 dollars
5) A difference of more than a certain % in OH (drastic count prompt)
If you need a count changed immediately, you can ask your ap ETL to change it via perpetual inventory.