After completing this lesson, you will be able to:
Discuss the Change Number method for managing a Material BOM
Use a Change Number to maintain a material BOM
Material BOM Changes: Change Number Method
When and Why to use Change Numbers
Bill of Material Management helps you create and maintain single and multi-level bills of materials (BoMs).
Use change masters to define, revise, plan, and release different effectivities of BoM changes at the component level.
Locate all occurrences of a component, across all of your BoMs with the "Where Used" function.
Use the mass replace function to update all occurrences of a component at once.
The following video shows the roles individual users play in changing a material BOM with a change master.
Applicable Process Steps
As you just saw, the process steps for revising a material BOM with a change master include:
Production Engineer- Discrete Manufacturing: Creates Change Masters
BOM Engineer: Creates a Bill of Material with a Change Master
BOM Engineer: Adds BOM items with a change master
BOM Engineer: Creates a change master out of the BOM to perform additional changes
BOM Engineer: Does a mass replacement with a Change Master
BOM Engineer: Copies the Engineering BOM to manufacturing BOM with a change master
Production Engineer- Discrete Manufacturing: Sets Change Masters to inactive
Benefits
The benefits of the material BOM maintenance with a change master are:
Understand at any time who has made a change to a bill of materials and why
Create a new change number within the material BOM and use it directly
Compare old and new development levels of the material BOM
Note
This process flow is covered in scope Item 64F- Bill of Material Management
How to maintain Material BOMs with Change Numbers
Introduction: Material BOM management with a change number
BOM management provides functions for creating and maintaining single-level and multi-level BOMs.
Change masters can be used to define, revise, plan, and release different validities of BOM changes at component level.
With the where-used feature, BOM engineers can find all occurrences of a specific component across BOMs. In combination with a mass replace function, component substitutions can be easily managed.
Task 1: Create Change Numbers
In the upcoming video, you will first get an impression of how Eric, our production engineer, creates two different change numbers with different validities. Then he defines the necessary object types to make a Material BOM change possible.
Task 2: Maintain a material BOM
Inside this video you see, how Samar, our BOM engineer first performs a material BOM creation together with an existing change number. Then inside material BOM he does a change with an existing change number. Finally he creates a new one and does again a material BOM change. At the end he checks the used change numbers inside timeline.
Task 3: Set the change number status
Material BOM changes are done and the change numbers are not used anymore. Therefore Eric sets the change numbers to inactive.
Task 4: Perform a mass replacement with a change number
In a second scenario Eric again creates a change number. Samar uses this one to perform mass changes of material BOM components.
Task 5: Handover an engineering BOM to manufacturing
Inside last scenario Samar uses a new change number, created by Eric, to do an engineering BOM handover to a manufacturing BOM.
Now you should have an impression of "How the manage a material BOM with a change number".