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:
Calculating the (full) lead time Step 1. Calculate 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 standard calendar for the availability type, which is specified in the Default Availability Type field of the Purchase Parameters (tdpur0100m000) session. To calculate the average available hours for each available day, LN takes the following steps:
Step 2. Calculating the lead time in hours Using the average available hours for each available day, LN next 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:
Step 3. 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. Examples Example- purchase availability
type The purchase availability type is PURAT. The standard calendar for availability type PURAT is as follows:
Based on the above standard calendar, 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.
Note The Transportation Time (Days) is converted by using the Availability Type for Carrying Goods, as entered in the COM Parameters (tccom0000s000) session, instead of the purchase availability type. Example- availability type for carrying
goods The Availability Type for Carrying Goods is EXPO. The standard calendar for availability type EXPO is as follows:
Based on the above standard calendar, 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.
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 five. Note Each time you open or close the Items - Purchase Business Partner (tdipu0110m000)/ Purchase Contract Line Logistic Data (tdpur3102m000) session, LN (re)calculates the lead times.
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