I have been looking into the use of the sales lead time in the accounts receivable parameters / sales ledger parameters in combination with the option 'working days'.
I noticed that the option working days only works in combination with a calendar assigned to the Organization administration > Organizations > Legal entities> the Foreign trade and logistics tab > Shipping calendar.
If you don't use a calendar in you organization administration but assign one on the customer directly it doesn't take the working days into account.
Which seems very peculiar to me.
Also the sales lead time set in the accounts receivable parameters might be 5 but when you check the delivery control screen when creating a new sales order, the lead time might say 8. Because the lead time also doesn't take into account the working days. Which is rather confusing because the 'working days' checkbox is just next to the lead time box in that screen. So if that one is selected you might think that it says lead time 8 working days.
But I just want ask why the working days checkbox has no effect in combination with the invoice and delivery > receipt calendar on the costumer?