Relation between BOM's, documents, drawings and Routing - Material

[Former Member]

Hi SAP Guru's,

I am trying to understand the data model of Material documents, BOM's,drawings, routings etc. Can any help me understanding how these are related and its functionality. I tried searching on SDN, but I was able to find some tables, but I want to know how these are related and their functionality.

Thanks.

Regards,

Deepthi.

[Former Member]

BOM in SAP stands for Bill of Material.

For making a product or assembling, there needs several components (part of product).

A well structured list of these components is known as BOM. The list will contain object number of each components and its unit of measure with quantity.

Table for BOM header             - STKO

Table for BOM item                               - STPO

Table for material to BOM link - MAST

In a product designing department, on designing phase the result will come up with product drawings and the parts required for that.

DRAD-document -object link

DRAW- document info record

When you tranfer material stocks are affected and so is the valualtion SAP stores material transfer in the form of material documents.

MKPF Material document header

MSEG Material Document Item

A routing is a description of which operations (process steps) have to be carried out and in which order to produce a material (product).

PLPO          Routing Operation Details

PLKO         Routing Header Details

MAPL         Routing Link to Material

[former_member213275]

Hi Tulasi,

For more info on relation refer below link.

http://help.sap.com/saphelp_46c/helpdata/en/e8/925db7c18d11d28fa70000e82de243/content.htm

Materials are not used directly and are used with BOM.

1.     Fetch material, Plant and Material Description. from MARA, MARC and MAKT.

2.     fetch BOM header and item from MAST using above values.

        BOM usage (MAST-STLAN) = 2  and then fetch header from STKO where STKO-STLNR =       MAST-STLAN and item from STPO (STOP-STLNR) = STKO-STNLR. Read BOM text from table STZU.  

3. From PLMZ read the BOM details (STLTLY, STLNR, STLKN) & then you can get the details from STPO for the components.

From PLMZ read the operation details (PLNTY, PLNNR, PLNKN) & then you can get the details from PLPO & then you can read the work center details from CRHD by linking PLPO & CRHD.

PLPO-OBJTY = CRHD-OBJTY

PLPO-ARBID = CRHD-OBJID

Read Production Version and Resource as per data mapping from table MKAL using the conditions.

Routing tables

PLPO          Routing Operation Details

PLKO         Routing Header Details

MAPL         Routing Link to Material

PLAB          Relationships - Standard Network

PLAS          Task List - Selection of Operations

PLMZ         Component Allocation

PLPH          CAPP Sub-operations

PLFH          PRT Allocation

PLWP         Maintenance Package Allocation

PLMK         Inspection Characteristics

Bill of Material tables

STPO          BOM Item Details

STPU          BOM Sub Items (designators)

STKO         BOM Header Details

MAST         BOM Group to Material

STZU          BOM History Records

STAS          BOM Item Selection

STPF           BOM Explosion Structure

Srikanth.