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Subcontracting requirements does not consider plant's inventory

juyne_xiang
Explorer
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Hello,

I am writing this to seek for advices for my current scenario. I have a material with below condition:

1. Parent material A consists of component B

2. Material A I have maintained a valid purchasing info record with Auto Sourcing checked, and create a valid BOM that contains component B, as well as a valid production version

3. For component B, I have maintained the subcontracting MRP area (type 03) in the material master. In the MRP area, I maintained the special procurement type as '30'

Now that for component B, there is an inventory, says 1500 units in the storage location. And because of the POs of material A, there is a subcontracting requirement (MRP element 'SubReq') of component B, says 2000 unit shown in MD04. 

When MRP has executed, it proposed a PR with 2000 units to fulfill the SubReq. It does not consider the stock in the inventory.

So, I would like to understand, will there be a way to allow MRP to consider the inventory? Any advice is much appreciated

Thank you

DominikTylczyn
Active Contributor
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would you share screen shots of MD04 of the component B in plant and MRP areas?
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DominikTylczyn
Active Contributor
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Hello @juyne_xiang 

You plan material B in a subcontracting MRP area, which is separated from plant or storage location MRP areas.

When a subcontracting PO is created, it creates a subcontracting requirement for component B in the subcontracting MRP area. Then a PR is created to fulfill this requirement. Again storage location and subcontracting MRP areas are two separated entities in the system as they are in real life: storage location is your warehouse, whereas subcontracting MRP area manages stock that you have already provided to the vendor/subcontractor.

The PR is to move stock from the storage location to the vendor/subcontractor (subcontracting MRP area). When it is executed it will reduce stock in the storage location and increase stock provided to the vendor thus offsetting the requirement there.

You can't offset a subcontracting requirement with a storage location stock directly. That would be illogical and against the real life process.

Best regards

Dominik Tylczynski

juyne_xiang
Explorer
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Hi Dominik,

I have shared my screen shot of MD04 for component B.

I have a little confused when you mentioned the "The PR is to move stock from the storage location to the vendor/subcontractor'. Could you elaborate a bit more on how can I achieve this?

Thank you