Source Determination

Use

The source determination facility helps you to find the most suitable source for a certain requirement from the large volume of data that is available, i.e. it suggests a suitable outline agreement or vendor for ordering purposes.

Integration

The following objects represent the basic data upon which the source determination process for requisitions and purchase orders depends:

· Outline agreement

· Quota arrangement

· Source list

· Info record

· Plant

一、Source List

Use

The source list is used in the administration of sources of supply.

It specifies the allowed (and disallowed) sources of a material for a certain plant within a predefined period. Each source is defined by means of a source list record.

供货来源有供货商(SAP中表现为信息记录和框架协议)和内部工厂(用于stock transfer)两种。我们这里讲的source list主要是采购中,供货商的表现形式。在创建PR的时候,如果将source determination选项勾选(如图),则系统会搜索所有货源,如果没有预先设定的首选项,则可以将列出清单。可以通过价格模拟和供应商评估来决定供货商。

另外,可以在用户参数中配置EFB来禁止用户手动指定供货商。

Source Determination

1. Source determination将发生在如下业务:

1.1. MRP运行 MD01/MD02/MD03

1.2. 创建PR ME51N

1.3. PR分配 ME56

1.4. PR分配和处理 ME57

1.5. 创建PO,vendor未知 ME25

1.6. 计划订单转化为PR MD14/MD15

2. Source List的功能

2.1. 定义一个vendor为固定的供货商(除了MRP运行) 同类型的(信息记录或框架协议)固定vendor只能有一个,如果不同类型的都有一个固定vendor,则框架协议的具有的优先级较高

2.2. 定义从某个内部工厂采购。只有PR的明细类型为U(stock transfer 库存转储)时起作用

2.3. Block某个vendor 如图,如果没有设置vendor而只是输入有效期间和block,则表示这段时期内,此物料在相关工厂不能外购

2.4. MRP相关 如果设置为1,则MRP运行时考虑此项作为货源,如果此项为SA,设置为2,可产生SA的schedule line前面提到过,如果一个物料没有维护源清单则禁止采购,可以如图在物料主数据中设置和后台配置(Purchasing->Source List)某个工厂的物料采购都需要源清单

我们可以通过ME06(Purchasing->Master Data->Source List->Follow-On Functions)来分析某个工厂下哪些物料还没有源清单

3. Define requirement of Source list

Source Determination

3.1 by Material

Source Determination

3.2. by Plant

Source Determination

4. Source List 对Source Determination的影响

Source Determination

4.1 为了好理解,这里手动维护Source list

Maintain SL manually --- ME01

Source Determination

4.2对应的设置主要是影响PR中Source Supply

Source Determination

5. Source List的几种维护方式

Source Determination

5.1 Maintain SL manually --- ME01

Source Determination

5.2 Set SL from outline agreement

5.2.1. by contract --- ME31K

Source Determination

5.2.2 by SA --- ME31L

Source Determination

5.2.3 Maintenance from p-info

Source Determination

5.2.4 Automatic Generation of the Source List --- ME05

Source Determination

Source Determination

6. MRP自动生成计划行

6.1 source list 放“协议”号码和Item

6.2物料需求计划选2

Source Determination

6.3 交货计划表要设定

Source Determination

MD61

二、Quota Arrangement

Use

The quota arrangement is an instrument used in sourcing administration.

A quota arrangement divides the total requirement of a material over a period among certain sources of supply by assigning a quota to each source.

The quota specifies which portion of the total requirement should be procured from a given source.

If a quota arrangement exists for a material, it is taken into account in the source determination process.

A quota arrangement is specified for a certain period. A quota arrangement item is created for each source within the period.

源文档 <http://help.sap.com/erp2005_ehp_05/helpdata/EN/75/ee115f55c811d189900000e8322d00/content.htm>

1. Quota Type:

Lot Size--Splitting Quota:用来控制是否分割Quota,一个lot是否可以按照Quota拆分,由Splitting Quota标识决定

Source Determination

Source Determination

2. Quota Rating:

Rate越低,表示Vendor的达成率越高,优先予以分配。

Quota Rating = Quota Alloc Qty/Quota = (Allocted Qty + Quota Base Qty) / Quota

(配额达成率 = (累计已经分配数量+新材料调整基数)/ 分配额

3. Vendor Allocating Rating

Allocate Percent = Quota/∑Quota

(某Vendor分配比例 = 某供应商配额/总配额)

4. Quota的方式

4.1 Quota Rating -- non-splitting Quota

4.2 Vendor Allocating Rating -- Requirement splitting Quota

SAP Quota优先采用Quota Rating的分配方式(即不分割),如要用Splitting的方式需要在Mat. Master Data中的MRP1 View设定Splitting方式(daily/weekly/monthly lot size都要设定)。

Source Determination

5. Quota MMR Setting

5.1 当使用Quota的功能时,必须在Purchasing View中设定Quota Usage为4.

Source Determination

5.2 如需要使用Splitting方式时,须在MRP 1 View中设定Lot Size为已选中Splitting Quota的那些Lot Size

Source Determination

6. Quota Parameters --- MEQ1

Source Determination

Source Determination

6.1 Procurement Type

设定quota物料的自制、外购

6.2 Source

定义向那个Vendor或者向那个Plant购买

6.3 Alloc. Qty

针对此Quota,在系统中已经分配的数量

6.4 Max Qty

分配给某Vendor 的最大数量,达到此数量后再不会分配给此Vendor

6.5 Quota Based

当在做Quota一段时间后,如果有新Vendor加入,因之前的供应商都已经存在Allocation,则此新Vendor的Rate会很多,短时间内会出现一直分配给此Vendor,所以可以设定此初始基数以防止此种情况发生

6.6 Max Lot Size

达到Max Lot Size时系统会自动拆分成两张PR(eg. 某Vendor Max Lot Size为20,按分配原则需给它分配30的量,则系统会开出20pc和10pc两张PR)

6.7 Mix lot Size

6.8 R. Profile -- Round Profile

即最小包装量

6.9 One Time

在同一次需求中只能给此Vendor一次需求

6.10 Max Rel.Qty

在某个区间中的最大分配数

三、Others

1. ME01 - Create Source List

2. ME05 - Generate

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