Not possible to determine any components

在ME21N/ME22N创建/修改Item Category为L的PO时，如果Delivery Date日期为过去，则会出现如题Error。

Not possible to determine any components

首先确认BOM存在并且有效。

BOM有效期的确认如下：
Delivery Date-Lead Time>=BOM Valid From Date

Lead Time的计算如下：
PR Lead Time=PO Processing Time（Working Day）+Delivery Time（Calendar Day）+GR Processing Time（Working Day）
PO Lead Time=Delivery Time（Calendar Day）+GR Processing Time（Working Day）

在确认BOM有效的情况下，可以用如下操作来解决这个问题：

1. 将Delivery Date改为将来某个日期
2. 回车确认，这时候Error会变为Warning
3. 再将Delivery Date改回去

Additional Reference:

Subcontracting with Production Version – Go ahead (yinwenbin.cn)

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after creating the bill of material for SFG/FG subcontracting material.

you have to maintain production version in MRP 4 view for the same FG/SFG material and in that production version maintain this BOM.

Enter the Production version and then click details.

In Bill of Material section

Maintain Alternative BOM and sys will automatically maintain BOM usage.

Save material changes and create PO it will work.

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