on 01-27-2014 3:20 PM
Hi experts,
I have some idea regarding the dates related to production order but I need a better understanding. Could you people please help me in this regard?
When I click on the icon in MD04 screen to convert the Planned order to Production order, a small window appears in which I see dates corresponding to Order finish, Order start and Planned opening.
Are these dates same as the following definitions?
Order start date = Production start date - Float before production
Order finish date = Production finish date + Float after production
What about Planned opening? Is it the opening date which marks the beginning of Opening period (defined in Schedule Margin Key)?
What are the basic dates (finish date, start date) in Production order?
What about Scheduled dates (finish date, start date and release date) in Production order? Does Scheduled start date refers to Order start date + Float before production? Does Scheduled finish date refers to Order finish date - Float after production? Does the Scheduled release date refers to beginning of Release period set in Schedule Margin Key?
Opening period and Release period should come before order start date, right?
I have a FERT which is produced in house. I did a planning run yesterday for monthly requirements (MD61) spanning 5 months (January to May). I have 5 Planned orders and for the last Planned order, Order finish date is 02.05.2014, Order start is 15.04.2014 and Planned opening is 15.04.2014.
As I have already created the planned order for the requirement due on 02.05.2014, I can covert it to Production Order any time till 15.04.2014. In this case, what is the relevance of Opening period set in Schedule Margin key? (Of course, in my case opening period is 0. That is why I assume Order start date and planned opening both are 15.04.2014).
I have run MD02 twice for FERT using both basic dates and lead time scheduling. Planned orders created in both the cases are exactly the same. I assume that lead time scheduling did not happen although I chose that option. Why? (Schedule Margin Key is maintained as 0 days for all the 4 parameters)
Thank you very much for your time
Hello
MRP with lead time scheduling can give the same results than the MRP with basic dates calculation if you have an in-house production time similar to the times from the routing.
Also, if a planned order was already lead-time scheduled, it will always be lead-time scheduled, even if you set the parameter for basic dates calculation on the MRP variant.
The relevance of the opening period is to calculate when a planned order should be converted to production order. You will find this information, for example on the MD04. Since you set this value to zero, there is no relevance.
BR
Caetano
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Thanks for the reply
"MRP with lead time scheduling can give the same results than the MRP with basic dates calculation if you have an in-house production time similar to the times from the routing."
In my case, I don't think it is a coincidence.
For a material FERT, I have created a monthly requirement of 1000 pieces for 5 months from January to May in MD61. MRP is run for FERT using MD02 (basic dates). I repeated the MRP run for lead time scheduling.
I changed the monthly requirement to 100 pieces for all the 5 months and repeated the MRP run using basic dates and lead time scheduling.
I again changed the monthly requirement to 10 pieces for all the 5 months and repeated the MRP run using basic dates and lead time scheduling.
For the monthly requirement of 1000 pieces, dates corresponding to 5 planned orders obtained using basic dates matches with those created using lead time scheduling.
This is the case for 100 pieces and 10 pieces.
"Also, if a planned order was already lead-time scheduled, it will always be lead-time scheduled, even if you set the parameter for basic dates calculation on the MRP variant."
Do you mean to say that if I did a planning run even once for a particular material (and for a particular set of dates) using lead time scheduling, I cannot later do a planning run using basic dates?
By the way, what are the basic dates (finish date, start date) mentioned in Production order? How are they correlated to order start date and order finish date?
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Hi,
Go through following link which shows with example how Production Order dates are calculated :
Example: Calculation of Order Dates - Production Orders (PP-SFC) - SAP Library
Regards,
Tejas
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Is there a mistake in the information provided in that webpage? It should be "Float before production" = 2 days and "Float after production" = 5 days, am I right?
Please check the last statement in the "Comments" column. It should be "5 work days after the scheduled finish", isn't it?
Please correct me if I am wrong.
Hi,
Regards,
Krishnendu.
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Hi
Check this link:
http://help.sap.com/saphelp_46c/helpdata/en/f4/7d297144af11d182b40000e829fbfe/content.htm
Regards,
Anupam Sharma
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