Inventory control for waffer/die in substrate fabrication
Hello gurus,
Looking for advice for inventory control of substrate fabrication. Fundamentally, how do we configure SAP such that 1 piece of a component (wafer) may yield different QTY's of sub-assemblies (sliced die), and plan MRP at the wafer level?
We use a wafer, say W-1, that may be printed into different size die based on the pattern being dispensed. This affects the yield of the wafer- EX, we can yield 121 of D-1 and 242 of D-2 using 1 piece of W-1 based on the print of the die. My question is, how do we configure SAP to plan to order the correct QTY of W-1 with these requirements? We are not able to use a fractional QTY of the die BOM for the wafer (i.e. a die BOM to consume 1/121 wafer per W-1 die). We have heard of solutions using UoM conversion (where 1 die EA = 1 die Sq Inches, so 121 Sq. Inches = 1 Ea Wafer). I have also heard solutions for alternate BOMs based on lot sizing... could this apply here also?
(1) W-1 -> (121) D-1 -> (121) Assembly-1; Demand for 1,000 Assemlby 1
(1) W-1 -> (242) D-2 -> (242) Assembly-2; Demand for 6,000 Assembly 2
How to get SAP to plan to order ~34 W-1?
Using R/3 release 7.3
Regards,
Timothy,
If I understand your question correctly I think this is fairly straightforward scenario. First establish the following BOMs
BOM 1
Assembly1 121 EA
D-1 121 EA
W-1 1 EA
BOM 2
Assembly2 242 EA
D-2 242 EA
W-1 1 EA
For Material “W-1” set the Rounding Value (in MRP1 view) to 1.000.
If you have demand for 1000 Assembly 1 and 6000 Assembly 2 then when you run MRP here’s what would happen:
1000 Assembly 1 requires 1000 D-1 which would require 8.264 (=1000/121) W-1, but with the Rounding Value for W-1 set at 1.000, that gets rounded up to 9.
Similarly, 6000 Assembly 2 requires 6000 D-2 which would require 25.793 (=6000/242) W-1, but with the Rounding Value for W-1 set at 1.000, that gets rounded up to 25.
Total requirements for W-1 = 9 + 25 = 34.
Hope that helps.
Dave
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W-1 1 EA
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Total requirements for W-1 = 9 + 25 = 34.
Hope that helps.
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I want to know abt
what material movement is? and the different types of material movement.
what is stock initialization?
in inventory controls..Hi........
what material movement is?
When you enter a goods movement, you must always enter the movement
type. The movement type has important control functions in Inventor
Management. It is essential for
o updating the quantity fields
o updating the stock and consumption accounts
o selection of the fields used for entering documents
o printing goods receipt/issue slips
Below you will find a short description of the standard movement types.
The reversal movement type is the movement type + 1 (reversal of 101 =
102).
101 Goods receipt for purchase order or order
If the purchase order or order has not been assigned
a stock type (unrestricted-use stock, stock in qualit
blocked stock) can be entered during goods receipt.
131 Goods receipt for run schedule header
This movement type cannot be entered manually. It is generated
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header.
261 Goods issue for an order
This refers to all withdrawals for orders
The goods issue can be posted manually in Inventory Management or
automatically when an order is confirmed or via a delivery in
Shipping.
351 Goods issue for a stock transport order (without Shipping)
643 Goods issue for a cross-company stock transport order (Shipping)
Used only for cross-company stock transport orders with SD billing
and invoice. The quantity is withdrawn from the unrestricted-use
701 Inventory differences in unrestricted-use stock (MM-IM)
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posting in Inventory Management.
Check this Link :
http://www.saptechies.com/goods-movement-type-in-sap-mm/
Sock Initialisation
Check this document:
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/biw/g-i/how%20to%20handle%20inventory%20management%20scenarios%20in%20bw.pdf
Check this links :
0VALSTKVAL in 0IC_C03
Inventory and Warehouse Management - 0IC_C03
Stock initialization by BX datasource is used to store the sttock as on Setuptable filling table(setup table for BX DS) time and date.
This upload is one time process.There are no delta loads with this DS.
Hope this helps you........
Regards,
Debjani........
Edited by: Debjani Mukherjee on Sep 20, 2008 8:11 AM -
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Moderator message: Basic frequently asked question - Please search forum for answers and read the docu in help.sap.com
See as well our rules of engagement: http://scn.sap.com/docs/DOC-18590
A good way to search the forum is with google. See this blog with details for a good search
http://scn.sap.com/community/support/blog/2012/04/16/getting-the-most-out-of-google-optimizing-your-search-queries
This blog describes how to use the SCN search: http://scn.sap.com/community/about/blog/2012/12/04/how-to-use-scn-search
The discussions are not a replacement for proper training
Thread locked
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null<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by [email protected]:
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