Distribution lead time based on the supply calendar

In Enterprise Planning, the supply lead time for a planned purchase order consists of the following lead times:

• The internal processing time from the Items - Purchase Business Partner (tdipu0110m000) session.
• The supply time from the Items - Purchase Business Partner (tdipu0110m000) session.
• A transport time between the address of the ship-from business partner and the receiving warehouse, based on a relevant distance table (if available) in the Distance Table by City (tccom4137s000) session or the Distance Table by ZIP Code/Postal Code (tccom4138s000) session
• The safety time from the Items - Purchase Business Partner (tdipu0110m000) session.

The sum of these lead times is displayed in the Calculated Lead Time (Days) field in the Items - Purchase Business Partner (tdipu0110m000) session.

In addition, the inbound lead time from the Items - Purchase Business Partner (tdipu0110m000) session is used.

Using the calculated lead time

If the order's finish date falls outside the lead-time horizon (defined in the Items - Purchase Business Partner (tdipu0110m000) session), then the start date is computed by:

1. Planning backward the inbound lead time using the calendar of the item/warehouse combination (see the Item Data by Warehouse (whwmd2110s000) session).
2. Subtracting the cumulative lead time from the resulting date.

Example: purchase lead time based on the calculated lead time

Using planned lead times

If the order's finish date falls within the lead-time horizon, the supply lead time is determined by planning backward each lead time separately:

1. The inbound lead time is planned using the calendar of the item/warehouse combination (see the Item Data by Warehouse (whwmd2110s000) session).
2. The supplier safety time is not planned with a calendar, but is interpreted as a number of calendar days.
3. The transport time is planned using the calendar linked to the address of the ship-from business partner.
4. The supply time is planned using the calendar linked to the address of the ship-from business partner.
5. The internal processing time is planned using the department calendar of the purchase office defined for the item/business partner combination.

Example: purchase lead time based on planned lead times

No supplier

If no supplier can be found, Enterprise Planning uses the following data to compute a supply lead time:

• The inbound lead time from the Item Data by Warehouse (whwmd2110s000) session, using the calendar of the item/warehouse combination.
• The supply time from the Item - Purchase session, interpreted as calendar days.

Example: purchase lead time without supplier