計劃策略70是一個好策略。但是也需要 Mixed MRP 的配合。

策略組70的能辦的事：

的核心目標為：為產成品的下一階物料做中長期計劃（PIR），對應的業務場景為，核心物料為半成品，而產成品則是在核心物料基礎上增減、修改配置。 可以這樣理解，半成品占據了整個物料成本的（絕）大部分，并且也占了整個生產周期的大部分，由于成品訂單的多樣性（或不確定性），因此，最恰當的方式是為 半成品而不是成品做中長期備貨計劃。

Mixed MRP 能辦的事：

Mixed MRP 為空的情況下，即缺省的情況下，只在銷售訂單（SO）能夠沖減PIR，其它的MRP元素比如U1：庫存轉儲訂單， DepReq：相關需求等并不能消耗PIR。

此時，必須通過為 Mixed MRP 指定恰當的值來實現這些MRP元素對PIR的消耗。

Mixed MRP --> 1 :Planning assembly level with final assembly，在組件級做計劃，但最終會組成為成品?-->??計算凈需求，適用于MTO，比如策略組70.

Mixed MRP --> 2:?Gross requirement Planning: --> ?計算毛需求，適用于MTS，比如策略組 11

Mixed MRP --> 3:Planning assembly level without final assembly，在組件級做計劃，最終不一定組裝為成品-->?計算凈需求，適用于MTO，比如策略組52.

此外，還可以通過BADI，來實現自定義的消耗策略，這樣可以想怎么消耗就怎么消耗，當然一定要結合自己的業務需求。

具體內容可參照：http://wiki.sdn.sap.com/wiki/display/ERPLO/PIR+consumption+with+Stock+Transport+Documents

還有非常重要的一點：

大家發現，有的時候按上述的方法進行了配置，特別是關于 Mixed MRP 的配置，依然無法出現希望的結果，如果出現了這種情況，下面這句話就非常重要了：

應該是測試順序問題，要按我說的順序辦： 第一步：清空該物料的PIR，并運行MRP；? 第二步：設置物料主數據為恰當的 Mixed MRP值；第三步：重新設置PIR并運行MRP。

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?附：SAP HELP 相關內容

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Purpose

This planning strategy is particularly useful for manufacturers of products with variants if a more reliable forecast can be produced for certain assemblies than for the multitude of product variants.

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Prerequisites

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You must maintain the master data of the assembly as follows:

• Strategy group 70 on the MRP screen.
• Set the indicator for assembly planning, the Mixed MRP indicator, to 1 on the MRP screen.
• Consumption parameters (Consumption mode, Bwd consumption, Fwd consumption on the MRP screen) to allow for consumption of planned independent requirements.
• If you are using this strategy in a make-to-stock environment, you also must set the Individual/coll. indicator to 2 on the MRP screen.

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Process Flow

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For a detailed example of the entire process, see Sample Scenario: Strategy 70.

This strategy is very similar to Planning with Final Assembly (40). However, planned independent requirements are consumed by production order requirements (or schedule lines in repetitive manufacturing) and not to requirements of sales orders. Although all graphics in this documentation show this component one level below the finished product, the component can appear on any BOM level.

• Stock for the assembly usually exists.
• Planned independent requirements are entered at assembly level. Procurement (planned by means of the planned independent requirements) is therefore triggered before the production order stage (or schedule line in repetitive manufacturing).
• The planned orders for the assembly/components are convertible.
• Procurement smoothing according to order demand is possible. In this strategy, however, the ability to react flexibly to customer requirements is more important.

An accurate availability check is performed according to ATP logic during production order processing. See Availability Check.

Requirements from production orders (or schedule lines) are passed on to production and can lead to changes to procurement after the sales order stage, if the order quantities exceed the planned independent requirement quantities. However the order quantities cannot be confirmed if there is insufficient coverage of components. The system automatically adjusts the master plan. For more information see Coping with Insufficient Coverage of Components.

The planned independent requirements are consumed during the production stage. This means that you can compare the planned independent requirements situation with the actual order requirements.

Unconsumed planned independent requirement quantities increase the warehouse stock of the component, and cause procurement to be decreased or not to take place at all in the next period. This procedure is called "netting."

轉載于:https://www.cnblogs.com/jefflu2012/p/3187408.html

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