How System choose Production Version

I see that if I've different production version for a product the system chose as default (when I release a production order) always the version which has the smallest number. Is it the only way?
If not, where I can define how the system chose the default production version?

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You can change the Production Versions in MRP 4 screen in MM02. Click on the version then click details. Here you can set validity dates for the version or you can also set lot sizes. Based on the quantity of the order, a certain version will be picked. Or, the version will be picked if it falls in the date range.

The selection of Production versions can be
1) Automatic or
2) Manual

This depends on your customisations for order type.

However, the Production version number which gets selected depends on following factors:
1) Validity date of the Production version as maintained in MRP4 view Production version details (material master), and
2) Lot size maintained in MRP1 view i.e. FX (Fixed) or EX etc
3) Lot size maintained in MRP4 view Production version details(Material Master)

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Maybe you change the Production Versions in MRP 4 interface from MM02.
- Choice and Click on Prodversion.
- May be You have more than one Production version.
- Then You click detail,
- And then where are BOM do you want to choice

And the others may be you can use in MD02, If you have more than one of Production version. when did You choice? May be number one and etc

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But my problem is the follow:
I've 5 different production version all with same valitity date and all with the same lot size.  The numbers of different production version are 0001, 0002, 0003, 0004, 0005.  When I release the order the choice of production version is automatic and the system always  choses the production version 0001.
How I can define that the sistem choses production version 0004?

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When there is five different versions available in the system, why do you want to select only version 0004. On what basis the system has to select this. If it has to select 0004 always then why do you want to keep the other versions validity. You can change the validity period of others.  Otherwise you can go into Quota arrangement and give the version 0004.

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I've 5 different production version because I can realize the same product on 5 different work center (same product but different work center).   But when I release the order I want the system choses automatically as default production version
0004 used for work center number 4.   After, if I want, I can change production version, so I can change work center in wich realize the product.  I don't know where I can define quota arrangement for production version.

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In customisation order type dependent parameters TZ OPL8, you have selection of production version. Change that to manual selection.  While creating order, all versions will pop up for selection.
All the best

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As mentioned, you can control this for manual selection. Or otherwise you can do the control thru Quota arrangement settings. This you can do from MEQ1 transaction. If you set the required version for 100 percent, then automatically this version will be selected.

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Production version selection when converting planned order

I am using multiple production versions in the material master for a combination of different alternative BOMs & Routing Group counters. In the IMG (OPLD) for Order Type Dependent Parameters, the production version selection is already set to manual selection.  But the production version is always defaulted as version 1 which is the first one in the material master and is not asking to select the version at the time of converting the planned order to a production order! I want to select the production version manually...any suggestions?..Any other config settings is lacking like selection priority, task list, etc? Pls advice.

Also, if it is an externally procured material, when converting the PR to PO, how can I select the version manually? Appreciate your suggestions.

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The reason sytem is not asking for a production version is very obvious as you would notice that while converting from planned order to production order (through MDO4) system already has a default production version assigned to plan order. so you need to first change production version in plan order before converting to production/ process order.  System shall only ask for the selection of production version while you are creating a production order directly.

Read Also:
What Are Product Group

SAP PP Reference Books:
SAP Production Planning , Configuration, Interview Questions and Certification, Books

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SAP MRP - Materials Requirements Planning Configuration Hints and Tips 

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