SAP APO: Pegging Area

See also: http://scn.sap.com/thread/1353326
Definition: Combination of product, location, account assignment object and planning version.
定义：产品、位置、科目分配和计划版本之间的组合。
 A requirements, stock or receipt element is in a specific pegging area. Only stock and receipt elements that lie within the same pegging area can be assigned to a requirements element. The stock and receipts of a pegging area can only therefore cover the requirements from the same pegging area.

需求，库存或是供应元素位于特定的pegging area中。库存和供应元素只可以被分配给处于同一个pegging area中的需求元素。

The pegging area is identical to the planning segment in SAP R/3, with the exception of the planning version. In SAP APO the term "planning segment" is often used as a synonym for "pegging area". 

 除了APO带有计划版本这一点有不同外，实际上，APO中的pegging area与SAP R/3 planning segment是一样的概念。在APO中，planning segment与pegging area是近似的意思。

It is a Procedure in Production Planning and Detailed scheduling that establishes the relationship between receipt elements and issue elements of a product within a location. Using pegging, the system assigns the corresponding receipt elements to the requirements.

 在PP/DS中，通过Pegging这个过程，系统把同一个location中的需求和供应元素建立关系，即，系统把供应元素相应地分配给需求元素。

Two types of pegging are available:
Fixed pegging
Dynamic pegging 

 两种pegging类型：固定和动态pegging .

Dynamic Pegging is carried out automatically by the system when planning, if the requirements or receipts situation changes. With dynamic pegging, the system deletes existing pegging relationships and creates new ones. Thus, with dynamic pegging, the assignment of a receipt element to a requirement element is generally not retained for long if the planning changes. 

动态pegging是在计划时，需求和供应元素有改变时自动完成pegging的。此时，系统会删除已存在的pegging关系并新建关系，因此，在动态pegging时,原有的接收和供应元素之间的分配关配将在计划变更后不再保留。

Fixed Pegging is used if you wish to fix the assignment of a receipt element to a requirements element and if the system should not change this assignment during automatic planning. Fixed pegging relationships are retained during planning and can only be deleted manually.

 固定pegging用于你想固定两者之间的分配关系，即便计划变更，两者关系之间也不会改变。固定的pegging关系在计划后保留，你只能手工删除。

Pegging relationship  / Pegging 关系
Connection between the receipt element and issue element of a product in a pegging structure. The receipt/issue quantities of a product can differ from one another. In this case, a requirement has to be covered by several receipt elements or an order can cover several requirements. This means that a requirement is connected with several receipt elements by means of pegging or that an order is connected with several issue elements.
Technically, the pegging relationships between the receipt and issue elements are connected by a 'pegging edge'. 

一 个产品的供应和需求元素的关联是在一个pegging结构中的。一个产品的接收/发料数量可以与另一个产品的不同。在此情况下，产品的需求可以由一个或多个供应元素满足，或是一个供应元素能用来满足多个需求。这就是说，一个需求会与多个供应元素pegging起来,或一个供应会与多个需求元素相连（也是通过 pegging)。

从技术上讲，需求与供应元素的pegging关系就是通过pegging edge关联起来的。

Pegging Structure / Pegging结构

Structure that is organized according to the BOM structures of all products (materials) involved and describes the planned relationship between receipt elements and issue elements, starting from the original customer requirement down to the receipt element of the raw material at the lowest BOM level of the BOM structure.

pegging结构是依据产品（物料）的 BOM结构组织起来的，包含并描述了需求与供应计划的关系 ，从原始客户需求向下展开到BOM最底层的原材料的供应元素。