Manufacturing Lead time, milestone operation wise

Good Evening to All !
I have a scenario. I am explaining this scenario through 1 example.
We have a material 'X'. Inhouse production time for this material is 6 days, which is maintained in MRP2 view.
Now in Routing of this material 'X' there are total 10 operations starts from 1 to 10. Operation No. '4' & Operation No. '10' are milestone operation. The workcenter for both milestone operations are different. Now in house production time which I maintained in material master is total lead time for material 'X'.
The requirement is: Workcenter of Operation "4 "wants to know on daily basis that what quantity should be delivered from their workcenter.
Now my question is that can I maintain this lead time(6 days) in 2 parts as:
Till operation "4" my lead time is 5 days &
From operation "5" to Operation 10 lead time is 1 day.
Please suggest all possible solutions.
Can APO help in this scenario.
Thanks in Advance.

If you run MRP with "lead time scheduling" (instead of "basic dates"), it will schedule the order by the routing, and let you know the planned workload for each WC in advance.

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I have checked that there is a provision to store Lead Time in Item Master.Is there a similar provision also available in Business Partner.I could find only shipping type in BP Master.
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No lead time field in BP Master.
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If you run MRP with "lead time scheduling" (instead of "basic dates"), it will schedule the order by the routing, and let you know the planned workload for each WC in advance.

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I wanted WIP to consider the fixed & variable lead times specified for the item - where I am not rolling up mfg lead times using BOM.
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null

Dear Bimal,
The manufacturing lead times (setup and operation) are resource specific, and to declare them at item lead time attribute level is not practical (you need to define too many item levels in BOM to reflect every manufacturing step). The other work around is when routing is defined, you define two resource steps for each resource and make the first step lot basis and give setup time as usage rate and the second step item basis and operation time as usage rate. This gets reflected in manufacturing scheduling irrespective of quantity limitation (to define lead time at item level you need to define lot size also). I hope this takes care of your needs.

Target and Actual Lead time in MCP1 report

Dear Experts,
In MCP1 report, what is Target Lead Time and Actual Lead Time. How it is calculated?
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Hi,
                                                                                Target lead time
On the operation level, it is the time period between the scheduled
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The target input date is calculated through the scheduled execution
    finish of the previous operation.
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    the scheduled finish.
and
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Hi All,
Could you please clarify what is difference between Compute Lead time and Roll up lead time.
I see in Routing > Tools.
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Refer The Oracle document
Manufacturing Lead Time Computations
Manufacturing Lead Time Computations (Oracle Bills of Material Help)
Rolling Up Cumulative Lead Times
Rolling Up Cumulative Lead Times (Oracle Bills of Material Help)

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Dear Sir,
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Sonia,
I hope your are refering to setup time, process time, teardown time in the production order.
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Dear Sir,
We need to know the Table name which can be used to get Operation wise Machine/Labour Std Value Time for a given Production Order .
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Dear Soni,
Plz refer my reply from this thread
[table that contains planned labour hours of operation;
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Dear,
There are no such a fields in material master, But in MRP 3 view you will get theotal replenishment lead time field.
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The query is related to the process of Material Requisition planning.
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Hi
for your information for any material the data for the lead time comes from the material master
http://help.sap.com/saphelp_46c/helpdata/en/fd/45b7ee9d6411d189b60000e829fbbd/frameset.htm
if you click on the link you can get the entire process.
as you can see SAP picks up the deatil from the MRP2 view of the material master.
hope this is helpful.
regards
Vignesh.

Total replenish lead time

Hi gurus,
anyone can explain why this field (total replenish lead time) is designed to enter manually instead of system automatically calculate from BOM for a manufactured part? and how does it work according to the following scenario:
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in plant 1000, PO processing time=1day
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to make X need 2 operation: 1st operation need 1 day to assemble A and B together, after assembling, 2nd operation need 1 day to paint, 1 day to dry
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thanks,
cookie

Dear Cookie
3.if it's only for availability check, does that mean the MRP would not be affected by this field, then what would be the lead time feed into MRP? what's the relationship between MRP and availability check? why they use 2 different sets of data?
1) MRP will not take this field into Account for Calculating Dates
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View of lead time of product in APO

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Hi Siva,
Thanks for your reply. but that data is maintained in R/3 Material master in MRP2 view.
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Scheduling by Milestone Operations

All, I have a scenario where my customer would like to calculate the lead time to produce material based soley on the length of time which is entered on Milestone operations for a routing. Currently durations are maintained at each operation and we do not want to remove this as it is important for costing. However they want to have the queue times at the end of a group of operations instead of on each individual. A simple example is below;
Step Duration Milestone lead time
10 1 hr
20 3 hr
30 2 hr 8 hr
40 2 hr
50 2 hr 8 hr
In this example the customer would want this order to take a total of 16 hours. They have a good idea of how long it takes the product to get from Milestone to Milestone. They want to capture all of the queue time in the milestone steps. Also they may have another order which has 7 steps but the overall leadtime the wish to capture is still 16 hours. This is a way for them to set general parameters without having to do time studies for every routing

Hi Gordon,
What I have understood from your requirement is that you wish to use Non - Milestone operation only for costing and not for scheduling but the scheduling for these operation must be done in milestone operation.
I suggest you follow the below steps.
1. Remove the NON Milestone Operations from scheduling in control key.
2. In Mile stone Work center add another standard value key as wait time or previous operation time. (I assume u will have space to add another standard value key.)
3. Please assign the control key meant for scheduling in this work center.
4. Please note the activity type assigned in this standard value key must be dummy and unit cost must be negligible to avoid costing duplication. you can contact finance or costing team in this possibility.
5. In routing, you can use the new assigned standard value key to assign the total time taken by operation before this milestone operation. Hence the scheduling could be done in mile staone operation and costing will not be duplicated.
OR
Using Queue time means you will have to maintina std. queue time and mini. Queue time.
You can try using wait time in routing as the wait time can not be reduced.
Let me know in case of any issue.

Sheduling by Milestone Operations

All, I have a scenario where my customer would like to calculate the lead time to produce materrial based soley on the length of time which is entered on Milestone operations. Currently durations are maintained at each operation and we do not want to remove this as it is important for costing. A simple example is below;
Step

Hi Gordon,
What I have understood from your requirement is that you wish to use Non - Milestone operation only for costing and not for scheduling but the scheduling for these operation must be done in milestone operation.
I suggest you follow the below steps.
1. Remove the NON Milestone Operations from scheduling in control key.
2. In Mile stone Work center add another standard value key as wait time or previous operation time. (I assume u will have space to add another standard value key.)
3. Please assign the control key meant for scheduling in this work center.
4. Please note the activity type assigned in this standard value key must be dummy and unit cost must be negligible to avoid costing duplication. you can contact finance or costing team in this possibility.
5. In routing, you can use the new assigned standard value key to assign the total time taken by operation before this milestone operation. Hence the scheduling could be done in mile staone operation and costing will not be duplicated.
OR
Using Queue time means you will have to maintina std. queue time and mini. Queue time.
You can try using wait time in routing as the wait time can not be reduced.
Let me know in case of any issue.

Lead time scheduling Vs Takt time scheduling

Hi Experts, we are planning to implement sap in one of our plants..below is our business structure for your understanding..
OEM - Mini bus Manufacturer which is the customer
Bus seat manufacturer - Our plant (we already have sap here) - we already have sap repetitive here
bus seat components manufacture - our plant (we are planning implement sap here)
based on bus seat forecast the component plant will drive their production and will be send it to assembly plant which is seat manufacture.
I have two questions
1. what should we do in our component plant discrete orders or repetitive? I know you cannot tell me without seeing the plant but that my question. what questions should be ask our business to make this decision? how do anyone make the decision of going either repetitive or discrete? pleade do not point out the link to rep vs dis.. I have already those but I need something more in detail..
2. I was reading a lot of help.sap.com and I have a question on below statement
Basically, you can use two different types of scheduling:
Sequencing with takt-based/rate-based scheduling
The system schedules the planned orders using the number of takts and the takt times/rates of the line hierarchy. You define the line hierarchy in Line Design. In this type of scheduling, the system does not create any capacity requirements and only schedules the main lines. The system does not schedule the feeder lines.
Lead time scheduling
In lead time scheduling, the system creates capacity requirements and also schedules the feeder lines. The system uses the operations from the rate routing or the standard routing for lead time scheduling.
what does lead time schuling will also do feeder line scheduling and take based does not schedule feeder lines means? can some explain with an example?
Thx
Swathi

any help is appreciated

Manufacturing Lead time, milestone operation wise

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