Schedule line number determination - Schedule line category CP(MRP)

Question

Hello All,
I want to know on what basis schedule line numbers getting determined.
Schedule line category: CP-MRP
Sales order line items getting confirmed based on the Planned order--> production order created through MRP run.
I have created sales order line item 1 with 100 quantities. for example I created today. RDD also today.
3 production order created.
Those production orders confirmation date as below.
Production order 1 - 60 quantities - 14.04.2014
Production order 2 - 30 quantities - 16.04.2014
Production order 3: 10 quantities - 18.02.2014.
There are four schedule lines for the line item 1.
All the 4 lines showed as per the confirmation date order.
But the schedule line numbers are not as per the above order.
For example,
Schedule line number   ----- delivery date ----- Confirmed qty
1.                                         09.04.2014            0
3.                                         14.04.2014            60
2                                          16.04.2014           30
4                                          18.04.2014            10
On what basis this schedule numbers getting determined? Is there any standard procedure ?
Why schedule line numbers not inline with the confirmed date?
Let me know if you need more information.
Thank you.
Regards,
Rakkimuthu C

Answer 1

Hi,
Schedule line number is the number that uniquely identifies the schedule line .
Use When an item has more than one schedule line, the system automatically assigns a unique number to each line. The number is displayed in the details screens for schedule lines.
Note The schedule line number serves internal purposes and does not, for example, determine the sequence of schedule lines in the overview screen. The schedule lines on the overview screen are sorted by date.
The schedule line number will get created automatically by the system. I hope this will clarify your doubt. Thanking you.