The newest date on the account isn't always the last furnishing

Supplier accounts collect dates. An invoice goes out after the truck, a credit follows a return, a replacement ticket shows up weeks after the original scope shipped. Pick the newest one and count from it, and you can be counting from the wrong day.

What we do before a final-furnishing date goes into any lien count: check whether scope is still open. Backorders, scheduled releases, approved extras, cancellations, a replacement request nobody closed. "No dispatch this week" is not the same as "everything agreed has been furnished."

Then sort the later records. A backorder shipment may be real outstanding scope. A replacement may only fix a deficiency, and Florida's definition in §713.01(12) leaves corrections of earlier work or materials out of final furnishing. A credit date is not a delivery at all. Other states use other triggers, so don't carry the Florida rule across state lines.

Keep a short decision record: the date you think is final, the document behind it, the later events still unclassified, and who owns the call. The longer walkthrough, with a backorder-plus-replacement example, is here: how to check a final-furnishing date before you count from it.