Creating Planned Independent Requirements for Articles with Segmentation 
Prerequisites
You have created characteristics for segmentation using transaction CT04
You have defined segmentation structures in Customizing for Define Segmentation Structures under
Logistics – General 
Segmentation 
You have defined segmentation strategies in Customizing for Define Segmentation Strategies under
Logistics – General Segmentation You have created articles and assigned a segmentation strategy in the article master (transaction MM41)
You have selected Plnng with assembly (101) in the Planned Independent Requirements: Internal Number Assignm view to maintain the number range for the requirement plan ID
You can access this view using transaction OMPP or in Customizing for Define Internal Number Assignment per Reqmts Class under
Production Production Planning Demand Management Planned Independent Requirements Default Values and Presettings .
Procedure
To create planned independent requirements for articles with segmentation, proceed as follows:
Go to transaction MD61.
Enter the generic article with segmentation in the screen for creating planned independent requirements.
Enter the plant and choose Enter.
If you have entered the generic article in step 1, the variants of the generic article are displayed in the Items tab.
In the Items tab, you can now assign requirement segment for individual variants.
In the Table tab, enter the requirement for the variants of the generic article at the requirement segment level.
In the Sched. Lines tab, the system displays the external requirement plan ID and the requirement segment.
Result
A new requirements plan number (PBDNR) is generated internally for the unique combination of variant of a generic article, requirement segment, plant, requirement type, version, requirements plan number, and external requirement plan ID.
You can use the external requirements plan ID to select the planned independent requirements for articles with segmentation.