Help · Writing lots
How lot numbers work
Where a lot's number comes from, why it never changes, and how a phone keeps its own run of numbers.
A lot number is the lot's identity in the sale. Two lots in one sale never share one, and a number that has been given to a lot is never handed to another.
At the desk, and in the browser on a phone. You do not type a number. The lot is given the next one when it reaches the book: the first lot is 1, the next is 2, and so on, always above the highest number already used in that sale. If you write a lot while out of signal, it gets its number when it is sent. The only number you may type is a sublot of a lot that is already there; see Sublots like 27A.
With the Lotdesk phone app. A phone can book a run of numbers while it still has signal, then write each lot with its own number at the piece, with no signal at all. The run is the phone's own: the desk in the office carries on numbering above it, so the two never meet. An unused tail of a run is not given back, because a number written down at the piece must never be given to a second lot.
Because a printed number is never reused, you may see gaps. A gap is not an error. It means a run was booked and not used up, or a lot was taken off the sale.
A lot number, with any sublot letters, can be at most 10 characters, which is the most the catalogue platforms accept. If a number is turned down when a lot is sent, see A lot number was refused.
Not what you needed? Write to support@lotdesk.app, with the details in what to tell us.