MRP Calculation of days

Hi,
How in the system the calculation of days is done
My query is I have material 'A' as a raw which required 30 days of time for procurement.
After proucrement of 'A' it is consumed in 'X' material as in house production.
So while setting the the days in mateirlal master how the days are put to get final material 'X' done in 37 days.
Here how the MRP calculate the days as from starting day if am doing mrp run today.
Regards
Rajesh

Hi,
You are asking about how the scheduling is carrying out in SAP system.
1. There are two types of scheduling.
a)Basic dates scheduling :
This is independent of required qty. This will take time from material master mrp2 view.
b) Lead time scheduling:
This is dependent of requirement qty. This will take time from routing. This is very accurate.
2.To calculate total days(37 days):
For inhouse production, system will consider Inhouse production time( mrp 2 view),GR processing time, Opening period.
For External procurement system will consider Processing time for purchasing (OPPQ), Planned delivery time(MRP2),GR processing time(mrp2).
3.Here how the MRP calculate the days as from starting day if am doing mrp run today
Say your requirement is 100 nos on 15.03.08. Suppose if you run MRP today, system schedules the dates by scheduling types ex. Backward Scheduling, Forward scheduling, Today Scheduling (settings in tcode OPU5)from your requirement date.First it will schedule for material X then for material A.
Hope you have got some idea about scheduling.

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Not sure if this is any simpler but you could save this as a custom function, that way you will have to modify it once a year for the holidays.
numbervar days;
datevar date1 := minimum({?My Parameter});
datevar date2 := maximum({?My Parameter});
days := DateDiff ("d", date1, date2) -
DateDiff ("ww", date1, date2, crSaturday) -
DateDiff ("ww", date1, date2, crSunday); // this will give you the number of business days
// (excluding Saturdays and Sundays) for a given date range.
// then, for each holiday, you can enter lines like this
if date(2008,01,01) in {?My Parameter} then days := days - 1;
// The final tally of DAYS should give you the total business days in a date range.
totext(days,0);
where {?My Parameter} is the date range.

Calculating work days in a function

I have a function that will count the total number of days between two weeks. ie May 19, 2010 to June 18, 2010 is 30 total days in my cycle. We dont work on weekend so that 30 days is not correct. The formula below is how i'm calculating the days between cycles. Is there any way to not count the weekends in my cycle? Please see formula below:
TIMESTAMPDIFF(SQL_TSI_DAY, "Release Dim"."Release Cycle Start Date", "Release Dim"."Release Cycle End Date")

Thanks Hammett81.
I used your formula but it's still calculating the days in my cycle as 30. My start date comes from my column "Release Dim"."Release Cycle Start Date" and my end date comes from the column "Release Dim"."Release Cycle End Date". Can you tell me why the formula below is giving me the weekends included in my count?
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TIMESTAMPDIFF(SQL_TSI_DAY,TIMESTAMPADD( SQL_TSI_DAY, 7-DAYOFWEEK("Release Dim"."Release Cycle Start Date"),"Release Dim"."Release Cycle Start Date"),TIMESTAMPADD(SQL_TSI_DAY, 7-DAYOFWEEK("Release Dim"."Release Cycle End Date"),"Release Dim"."Release Cycle End Date"))+ CASE 7-DAYOFWEEK("Release Dim"."Release Cycle Start Date") WHEN 6 THEN 5 ELSE 7-DAYOFWEEK("Release Dim"."Release Cycle Start Date") END-CASE 7-DAYOFWEEK("Release Dim"."Release Cycle End Date") WHEN 6 THEN 5 ELSE 7-DAYOFWEEK("Release Dim"."Release Cycle End Date") END

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If I have understood your question then I think following solution may help you.
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If it is some other database then create couple of Filter at Universe level: Such as Holidays so that you can use this one to subtract holidays:
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ucase(Calendar_year_lookup.Holiday_Flag)
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Isseu regarding MRP calculation.

Hi Gurus,
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Hi.
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I have configured interest calculation for line item & balances with the calender type as G.
During the execution of FINT, system consideres base days as 366. Our fiscal year is April 2008 - March 2009. Summing up the days it is only 365.
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HI
WHAT EVER CONFIGURED NO NEED TO TAKE IN TO CONSIDRATION EVERY TIME.AS PER DAYA PER ANNUM U NEED TO TAKE
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GO TO OBAA
SELECT INTETEST CALCULATION INDICATOR OR ACCOUNT NUMBER
PRESS ON DETAILS BUTTON
GO TO CALANDER TYPE GIVE WHAT EVER U WANT
B 30/360
J 30/365
F 28,..,31/360
G 28,..,31/365
I .E AS PER U R REQUIREMENT
DO THE SAME IN GOLDEN CLINET AND TRANSPORT TO QUALITY LATER TRANSPORT TO PRODUCTION
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Hi Friends,
Could anyone of you help me to find out the business days(Excluding Saturdays and Sundays) between two dates.
The difference should be calculated of both the Start_dt and End_dt values truncated. The result should be calculated and stored according to business days, it means weekend days are to be ignored.
create table sample (id number,start_dt date,end_dt date). The table values are as follows;
ID ; start_dt ; End_dt
1 ; 08-02-2012 ; 15-02-2012
2 ; 30-12-2011 ; 15-02-2012
My output should be;
ID ; start_dt ; End_dt ; Expected Business Days (Excluding Weekends)
1 ; 08-02-2012 ; 15-02-2012 ; 4
2 ; 30-12-2011 ; 15-02-2012 ; 33
Please note that, the Start Date and End Date can be any date from any year. Please help me on this.
Regards,
Williams.
Edited by: Williams on Feb 8, 2012 6:28 PM
Edited by: Williams on Feb 8, 2012 6:29 PM

Here's my first cut at it.
SQL> WITH sample AS
2 (
3     SELECT 1 AS id, TO_DATE('08-02-2012','DD-MM-YYYY') AS start_dt, TO_DATE('15-02-2012','DD-MM-YYYY') AS end_dt FROM DUAL UNION ALL
4     SELECT 2 AS id, TO_DATE('30-12-2011','DD-MM-YYYY') AS start_dt, TO_DATE('15-02-2012','DD-MM-YYYY') AS end_dt FROM DUAL
5 )
6 /* END SAMPLE DATA */
7 SELECT id
8       , start_dt
9       , end_dt
10       , COUNT(*)
11 FROM   sample
12 JOIN   ( /* Exclude Weekends */
13           SELECT dt
14           FROM ( /* Generate a range that includes all days */
15                   SELECT min_start_dt + (LEVEL - 1) AS dt
16                        , TO_CHAR
17                          ( min_start_dt + (LEVEL - 1)
18                          , 'fmDAY'
19                          , 'NLS_DATE_LANGUAGE=AMERICAN'
20                          ) AS dy
21                   FROM   ( SELECT MIN(start_dt) AS min_start_dt
22                                 , MAX(end_dt)   AS max_end_dt
23                            FROM   sample
24                          )
25                   CONNECT BY LEVEL <= max_end_dt - min_start_dt + 1
26                 )
27           WHERE dy NOT IN ('SATURDAY','SUNDAY')
28         ) dys ON dys.dt BETWEEN start_dt AND end_dt
29 GROUP BY id
30         , start_dt
31         , end_dt
32 /
        ID START_DT            END_DT                COUNT(*)
         2 12/30/2011 00:00:00 02/15/2012 00:00:00         34
         1 02/08/2012 00:00:00 02/15/2012 00:00:00          6
2 rows selected.I got different results then you though. Can you say why your counts are what they are?

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I need to calculate 60 days from last run date (I will create prompts), then take that number to sum a total of items.
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Hi,
You can create a calculation to calculate 60 days before your run date. e.g. if rundate is your date item then the calculation will be:
rundate-60
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Suggestions on calculating work days instead of Calendar days

Hi there,
I would like for someone to suggest how would I approach a project in calculating a date that would consider if a date is a holiday or a work day. For example: If I take current date + 7 normally it would be a week (7 days). However, if a day in that week is a holiday, then it would return the 8th day. If the 8th day falls into a weekend, then, get the next work date.
Any ideas would be greatly appreciated.
Thanks for your assistance in advance.

Thanks. This give me a pretty good start. I am thinking that I need a table that store holidays (Non-work days excluding weekend). Once I load this table into memory, then I would check the first date + 7. Then compare the two dates against the array to see if there is a holiday. If there is, then I would increment the end date by 1 and validay if it is a weekend date. If it is, I would continue to incurement until it is nolonger an weekend date. Once I have that, I would check the date against the array (where I left off) and continue to validate to see if there are more holidays.
What do you think about this approach?

Function for calculating working days

Dear Oracle
Is there any function to calculate no of working days if I pass From date & To date?.
Thanks
Christy.

This would work for normal weekdays, but what about bank holidays?
They change from country to country, so you need to create a package yourself.
We got one that looks like the following:
create or replace
package body zentr_date_functions as
function eastern (p_year in number) return date is
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    -- CKL 02.09.1998 nach c't 18/98
    l_a pls_integer;
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    l_d pls_integer;
    l_e pls_integer;
    l_p pls_integer;
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      return to_date(to_char(p_d, '00')||to_char(p_m, '00')||to_char(p_y, '0000'), 'DDMMYYYY');
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    if p_year not between 1900 and 2099 then
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    l_c := mod(p_year, 7);
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end eastern;
function is_workday (p_date in date) return number as
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    l_eastern date;
begin
    if to_char(p_date, 'DY', 'NLS_DATE_LANGUAGE = AMERICAN') in ('SAT', 'SUN') then
      return 0;
    end if;
    if to_char(p_date, 'DDMM') in ('0101', '0105', '0310', '2412', '2512', '2612', '3112') then
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      return 0;
    end if;
    if to_number(to_char(p_date, 'MM')) not between 3 and 6 then
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    end if;
    if to_number(to_char(p_date, 'YYYY')) not between 1900 and 2099 then
      -- calculation not possible
      return null;
    end if;
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    if trunc(p_date) in (l_eastern - 2, l_eastern + 1, l_eastern + 39, l_eastern + 50) then
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      return 0;
    end if;
    return 1;
end is_workday;
function workdays_between (p_date1 in date, p_date2 in date) return number as
    -- count number of working days between p_date1 and p_date2 (incl. both)
    l_count pls_integer := 0;
begin
    for i in 0 .. p_date2 - p_date1 loop
      l_count := l_count + is_workday(p_date1 + i);
    end loop;
    return l_count;
end workdays_between;
end;
/

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Currently if the user chooses a vacation day that includes the cut off date. So from june 30th to july 5th it doesn't bundles it together and calculates it into the next year total. So if you have a vacation from June 15th to July 2nd it all goes into your next year's vacation days.
What I want is to have this year's vacation days be calculated into this year and next year to be calculated into next year. So if you have the June 15th to July 2nd vacation it would add 11 days to This year's total and 2 days to next year's total.
WITH t AS ( SELECT id,
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           ORDER BY id)
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             ELSE
                0
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       OVER (PARTITION BY vacations.korisnik)
          next_years_grand_total
FROM t, vacations
WHERE t.id = vacations.idLooking forward to any ideas you can offer

hi,
You need to write a code to get the key figure and characterstics value.
First step is to defined the structure of all the field that you want to read.
This table I_AXIS_DATA will contain the characterstics.
This table I_CELL_DATA will contain the keyfigure.
Please find the code.
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How to calculated "Target days' supply" in SOP Planning

Hello all
after input "Target days' supply" in SOP. then run "Create Product Plan"
there will create production plan in screen. thus i used "Target days' supply" strategy.
there have one quesion, how to calculated product quantity?
Thanks.

Dear,
System calculate days supply automaticly, this that no of days required to maintain that stock level,
In the standard planning table, choose Edit-Create production plan-and the desired strategy (either Synchronous to sales, Zero stock level, Target stock level, Target daysu2019 supply, or Plan externally).
Please refer this link for help,
http://help.sap.com/saphelp_47x200/helpdata/en/a5/631fdf43a211d189410000e829fbbd/frameset.htm
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