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Former Member
Sep 10, 2007 at 06:17 AM

[impt] Where does the "Withdrawal Quantity " figure came from?

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Hello to all,

I just have an issue with withdrawal quantity. How is this "withdrawal quantity" field computed in MD63.

Here's my scenario:

I have a material ABC for plant 1234. I have checked the MRP settings of this material for planning strategy and consumption mode. The planning strategy used is <b>Z0</b> (which is make-to-stock production), with this, the requirements type for planned independent requirements is <b>LSF</b> and requirement type for the customer requirement is <b>Y41</b>.

Now, the comsumption mode is 1 which is backward. The Bwd. consumption per. is 99.

As defined in the documentation (provided by SAP) for Demand Management,

"The consumption period (either forward or backward) is specified in workdays and is valid from the current date. Sales orders,material reservations, dependent requirements then consume the planned independent requirement quantities that lie <b>within the consumption period</b> and after (for forward consumption) or before (for backward consumption) the requirements date."

Now, how do you determine the withdrawal quantity based on these information. Is the consumption period important? How do I determine the consumption period? Where do I start the backward consumption?

Thanks.

Regards,

Patvin