Lead Time

This is the time it takes for merchandise to be ordered and delivered to your store.

Tom wants to buy his wife a custom made diamond necklace for her birthday January 30th. The store says he must place the order by December 16th because they need 45 days lead time to order the necklace, have it made, and get it delivered to the store.

https://accounting.uworld.com/cpa-review/lc/accounting-dictionary/term/lead-time/