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Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
Alternative Items in an Alternative Item Group
An alternative item group is used to group together alternative items in a BOM. Any of the materials in the alternative item group could be included in the assembly. These items are known as alternative items in the BOM.
You can use alternative items in the following situations:
• Alternative items with a usage probability
The alternative items are included with a certain usage probability.
o Material requirements planning (MRP) uses the usage probability to determine dependent requirements for the materials.
o In the production order, dependent requirements are converted to a reservation.
The withdrawal posting for the reservation in the production order uses either the usage probability or the 100% availability check according to ATP logic.
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
Data for Alternative Items
Use
When you enter an alternative item group for the item, you can enter the Priority, Strategy, and Usage Probability in a dialog box.
Features
Usage Probability
Material requirements planning (MRP) plans the alternative items according to usage probability.
If you use the usage probability to determine the withdrawal posting (strategy 1), the quantities are proposed according to the usage probability. You can change the proposed quantities.
• An alternative item is only planned if the usage probability is at least 1%. • If the usage probability is 0%, a dependent requirement with quantity 0 is generated for the
material.
The component with the quantity 0 is displayed in the planned order. If required you can increase the quantity there.
• It is possible to plan too much for alternative items, because you can enter usage probabilities that add up to more than 100%.
Priority
The priority of an item within an alternative item group determines the sequence in which material components are reserved in the production order.
Strategy
The strategy is only relevant to the withdrawal posting in the production order. The strategy is ignored in MRP.
You use the strategy to determine how the items within an alternative item group are selected for the withdrawal posting. Use the same strategy for all alternative items in an alternative item group.
The following strategies for withdrawal postings are supported:
• Withdrawal according to usage probability (manual changes possible) • Withdrawal if availability is 100%
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
Strategy 2 (100 % Availability):-
Strategy: Example
If you use this strategy, the availability checks uses, ATP logic according to the priorities you define.
100% Availability
Gross requirements: 100 pieces
Calculating issue quantity for 100% availability
Material Percentage usage probability
Priority Planned requirement qty
ATP qty
Issue quantity
A 20 1 20 30 0 B 30 2 30 150 100 C 50 3 50 180 0
The required quantity of the first material in order of priority that covers 100% of requirements is reserved (material B). The system sets the usage probability of the reserved material to 100%. The quantity and usage probability of the other alternative items (materials A and C) are set to 0.
Missing Parts Situation
When none of the alternative items cover the requirement 100% on the requirements date, the availability check confirms a 0 quantity for all the items. This means that there is no reservation.
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Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
Demonstration:-
In the Bill of Material all the alternatives have 10 as the required quantity for 1 base quantity
For component 40000555 priority 1 is given, strategy 2 is given and usage probability is 30%
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
For component 40000666 priority 2 is given, strategy 2 is given and usage probability is 40%
For component 40000777 priority 3 is given, strategy 2 is given and usage probability is 30%
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
While the stock of materials is as follows
40000555 7 quantity
40000666 12 quantity
40000777 14 quantity
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Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
Planned order is created and is converted to production order.
Production order shows all materials are available
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
In the component overview of the production order only item 40000666 shows requirement 10 and
other two materials having zero requirements as item 40000666 is having higher priority than
4000777 and can satisfy with the quantity available
Goods issue to the order
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Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
Only material 40000666 is issued
Order shows 10 quantities withdrawn for 40000666 material.
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
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Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
Strategy 1 Manual Maintenance/by usage probability: - In this strategy all or more items can be
chosen with the usage percentage.
Strategy 1
Material Usage Probability
40000555 30%
40000666 40%
40000777 30%
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
--------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------
Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
--------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------
Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
--------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------
Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]
https://sites.google.com/site/sapppdocs/
Alternative Item Group in BOM
--------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------
Created by: - Devidas Karad
SAP PP Certified Consultant
E-mail:- [email protected]