| Calculating purchase item lead timesYou can specify and
calculate several lead times for a combination of purchased item and business
partner. In the Items - Purchase Business Partner (tdipu0110m000) and Purchase Contract Line Logistic Data (tdpur3102m000) sessions: Note Each time you open or
close the Items - Purchase Business Partner (tdipu0110m000) or Purchase Contract Line Logistic Data (tdpur3102m000) sessions, LN (re)calculates the
lead times. Calculating the (full) lead time Calculating the average available hours for a
day To calculate the
(full) lead time, LN first determines the average number of available hours for each working day
based on the workweek for the availability type, which is
specified in the Default Availability Type field of the Procurement Parameters (tdpur0100m000) session. To calculate the average available hours for each
available day, LN: - Determines the
available hours for each available day, based on the start time and end time.
- Calculates the
total available hours in a week by adding up the available hours for each day.
- Divides the total
available hours in a week by the number of available days in a week. This
results in the average available hours for each available day.
Calculating the lead time in hours Using the average available hours for each available day, LN converts the lead
time components to hours and calculates the lead time by adding up the
following lead time components from the Items - Purchase Business Partner (tdipu0110m000)/ Purchase Contract Line Logistic Data (tdpur3102m000) sessions: The calculation of the transportation time is based on the
implementation of Freight, which you can define in the Implemented Software Components (tccom0500m000) session. If Freight is not
implemented, LN takes
the transportation time between the ship-from business partner's address and
the receiving warehouse's address based on a relevant distance table (if
available) from the Distance Table by City (tccom4137s000) or Distance Table by ZIP Code/Postal Code (tccom4138s000) sessions. From which of these sessions the
transportation time is retrieved, depends on the value of the Usage Distance Tables field in the COM Parameters (tccom0000s000) session. If Freight is implemented, calculation of the transportation time is
based on carrier, and routes. Route plans and service levels are not known at this point in time. To
retrieve the transportation time: - If the route, the carrier, the origin, and the destination
addresses are known, LN first searches for route plans and then for standard routes with matching routes, carriers, and
addresses.
- If more than one matching route plan or standard route is
found, LN selects the
route plan or standard route with a transport means group that matches the transport means
group of the carrier.
- If LN still finds more than one route plan or standard route, route
plans have priority over standard routes. If only standard routes are found,
the standard route is selected following the settings of the Carrier/LSP Selection Criterion parameter in the Freight Planning Parameters (fmlbd0100m000) session.
- If LN still finds more than one route plan, it selects the first one it
encounters in the database.
Calculating the lead time in days Using the average
available hours for each available day, LN converts the
calculated lead time from hours into days. If a fraction of a day is left, LN rounds this to a
whole day. This results in a calculated lead time that is always expressed in
whole days.
Example- purchase availability
type The purchase
availability type is PURAT. The workweek for availability type PURAT is as
follows: Day | Available | Start time | End time | Available hours |
---|
Monday | Yes | 8:30:00 | 16:30:00 | 8 | Tuesday | Yes | 8:00:00 | 16:00:00 | 8 | Wednesday | Yes | 9:00:00 | 16:30:00 | 7.5 | Thursday | Yes | 8:00:00 | 16:30:00 | 8.5 | Friday | Yes | 8:00:00 | 16:00:00 | 8 |
Based on the above
workweek, a total of 40 hours is available for each week. For each available
day, on average eight hours are available, which equates to 40 available hours
for each week/five available days for each week. Using the average of
eight available hours for each available day, LN converts the
following lead time components into lead times that are expressed in hours. Lead time component | Lead time | Lead time in hours |
---|
Internal processing time | 6 hours | 6 hours | Safety time | 6 hours | 6 hours | (Full) supply time | 1 day | 8 hours |
Example- availability type for carrying
goods The Transportation Time (Days) is calculated using the Availability Type for Carrying Goods, as specified in the COM Parameters (tccom0000s000) session, instead of the purchase availability type. The Availability Type for Carrying Goods is EXPO. The workweek
for availability type EXPO is as follows: Day | Available | Start time | End time | Available hours |
---|
Monday | Yes | 8:00:00 | 17:00:00 | 9 | Tuesday | Yes | 8:00:00 | 17:00:00 | 9 | Wednesday | Yes | 9:00:00 | 17:30:00 | 8,5 | Thursday | Yes | 8:00:00 | 17:30:00 | 9.5 | Friday | Yes | 8:00:00 | 17:00:00 | 9 |
Based on the above
workweek, a total of 45 hours is available for each week. For each available
day, on average nine hours are available, which equates to 45 available hours
for each week/five available days for each week. Using the average of
nine available hours for each available day, LN converts the Transportation Time (Days) into a lead time that is
expressed in hours. Lead time component | Lead time | Lead time in hours |
---|
Transportation time | 2 days | 18 hours |
Example- calculated lead time The sum of the Internal Processing Time, Safety Time, and Supply Time is 20 hours. Which is, when converted to
days, 2.5 days which equates to a total lead time of 20 hours/eight hours on
average available for each available day. Because the calculated lead time is
always expressed in whole days, LN rounds the lead time to 3 days. The Transportation Time (Days) is 18 hours. Which is,
when converted to days, 2 days which equates to a total lead time of 18
hours/nine hours on average available for each available day. As a result, the Calculated Lead Time (Days) is 5. | |