Revision Levels (SAP Library - BOMs (PP-BD-BOM))

Revision Levels

If you make changes to a material with reference to a change number, you can assign a revision level to specific change statuses. This allows you to process the objects later with reference to either a change number or a revision level.

Note

In Customizing for Logistics General, you can activate revision levels for your company by choosing Engineering Change Management ® Control data. You can also define the order in which revision levels are assigned to materials by choosing Engineering Change Management ® Revision levels ® Define revision levels for materials.

Before you can assign a revision level to a material for a specific change number, the following requirements must be met in the change master record:

The indicators Object type active for change number and Management record required for each object must be set for the object type Material.

An object management record must exist for the selected object.

You can either enter this manually or have it generated automatically by the system. To have it generated automatically, you must set the indicator Object management record generated in the change master record.

If you want to assign the revision level with indicator reference to an engineering change request (a change master record with a defined change type), the change request must first be approved and converted to an engineering change order. To do this, you set the appropriate system status.

If you defined when you configured your system that the system is to check protected time periods, the valid-from date of the selected change master cannot be in this period.

Caution

The indicator for the processing status of a material is unique. This means that you can only assign one revision level to the material (BOM header material) for a change made with reference to a specific change number (for example, CH01).

You can only assign a new revision level for a change made with reference to a different change number.

You can assign a revision level to a material either from engineering change management or directly when processing the material (for example, in the material master record or in the BOM). This section describes how to process a revision level from BOM processing functions.

Example

The table below shows BOM changes for material AA, plant 0001, usage 01. The changes are made with reference to three change numbers. Two changes also have revision levels assigned to them.

Changes to the BOM for material AA

Change number

Valid-from date

Revision level assigned

AA

01/01/1998

yes (01)

BB

02/01/1998

CC

03/01/1998

yes (02)

This means that material AA has the following revision levels: 01 and 02.

You can process the material on 01/01/1998 using change number AA or revision level 01.

Change number	Valid-from date	Revision level assigned
AA	01/01/1998	yes (01)
BB	02/01/1998
CC	03/01/1998	yes (02)