Dates for Backwards scheduling when MRP Run

[Former Member]

Hello experts,

When MRP run, which calendar does SAP take to schedule planned orders? where could I indicate it?

Thanks in advance.

Laura

[kiran_kumar179 · Accepted solution]

Laura,

MRP considers Plant factory calender for scheduling and dates determination Please check SCAL for FC.

Check OP03 for FC assignment to your plant.

Br

KK

[Former Member]

Everything is clear now.

Thanks everybody!!

Regards.

Laura.

[Former Member]

Thank you all,

I have checked the calendar that is assigned to my plant, and, as you have said, is the one that is taking into consideration to determine the dates.

In my case, Saturdays and Sundays are not workdays. As a result, every purchase requisition has its release date assigned to a workday.  What I have noticed is that although Saturdays and Sundays are not work days, planned delivery time and In-house production time is taking them into consideration to calculate the release date. What I mean is that those two fields are defined as calendar days. Is that correct??

Thanks again.

[kiran_kumar179]

Laura,

Inhouse production time is based on factory calendar

See below note from SAP help

Specifies the time in workdays needed to produce the material in-house

Planned delivery time is based on calender days

See below note from SAP help

Number of calendar days needed to obtain the material or service if it is procured externally

See below SAP note for more information

1365705 - End of replenishment lead time, plnd. deliv. time, calendar

Br

KK

[Caetano]

Hello Laura

The planned delivery date is calculated in working days because the vendor may not follow exactly the same calendar than the plant. Since it is not possible to assign a factory calendar to the vendor, MRP considers that this value is defined in calendar days.

If you want to know if some value is calculated in working days or in calendar days, check the F1 help.

BR

Caetano

[marianoc]

Hi Laura,

MRP considers the Factory Calendar assigned to the plant (you can see this assignment in table T001W or in the customizing) or the Planning Calendar assigned in the materials master (in case you have assigned a calendar).

Kind Regards,

Mariano

[Caetano]

Hi Laura

MRP always consider the factory calendar assigned to the plant to calculate the planned order dates. It is possible to assign another factory calendar to the work center and it is used to calculate the operation production dates only.

See also the note below:

1895951 - Order dates and factory calendar

BR

Caetano