Bills of material are used in different modules of SAP ERP. Not just in SAP Plant Maintenance. There is a special field in BOM master data called “usage” that defines for which module a particular BOM is created. If you are interested to know more about BOMs in other module, you can for example read our tutorial about SAP PP bills of material.
What are SAP PM Bills of Material (BOM)?
To understand it, we will consider a simple example, BOM for a computer. Here when an assembly process is executed for a computer, its components will be automatically made available according to BOM.
Similarly, in plant maintenance, if there is a requirement for some components to be replaced during the time of maintenance and they have BOMs, then such BOM will be automatically exploded for a particular equipment or location.
The illustration below provides an illustration of BOM for a computer.
SAP PM bills of material can be defined as lists of components making up a more complex technical object or an assembly. These lists contain material numbers of components, their quantities and units of measure (UOM). The components of SAP PM bills of material can be either of stock (S) or non-stock (N) materials. The primary usage of maintenance BOM is to describe the structure of a maintenance object. Using BOM enables us to specify the exact location(s) where maintenance tasks are to be performed.
Types of SAP PM Bills of Material
Functional Location BOM
The BOM which specifically links to a Functional Location. Since Functional Location is unique, the Functional Location BOM is also unique.
Equipment BOM
The BOM which links to equipment. Since equipment is unique, equipment BOM is also unique.
Material BOM
The BOM which links to a material (main unit code, assembly or a spare part).
Creation of SAP PM Bills of Material
Now, let us look into the process how we can create the required BOM for plant maintenance.
The following transactional codes will be used.
| Transaction code | Activity |
| IB01 | Create Equipment BOM |
| IB02 | Change Equipment BOM |
| IB03 | Display Equipment BOM |
| IB11 | Create Functional Location BOM |
| IB12 | Change Functional Location BOM |
| IB13 | Display Functional Location BOM |
Create Equipment BOM
| Transaction code | IB01 |
| Menu path | SAP Easy Access –> Logistics –> Plant Maintenance –> Management of Technical Objects –> Bill of Material –> Equipment BOM –> Create |
Start the transaction and the initial screen will be displayed as shown below. Enter the Equipment number for which BOM to be created, Plant code and choose BOM Usage from the list. As we can see, usage “4” is reserved for plant maintenance.
Press Enter button on the keyboard. We will be guided to the next screen for entering components of the BOM.
Enter the components, mention the required quantity and unit of measure for each component. Next, click Save button. We will be receiving a confirmation of equipment BOM creation. See below an example.
Change Equipment BOM
| Transaction code | IB02 |
| Menu path | SAP Easy Access –> Logistics –> Plant Maintenance –> Management of Technical Objects –> Bill of Material –> Equipment BOM –> Change |
If we need to make changes for an existing equipment BOM, follow the steps as shown below.
Enter the equipment number, plant and BOM usage on the initial screen, Then, press Enter on the keyboard.
Make the necessary changes to the SAP PM bills of material and click Save button to finalize them. We will receive a confirmation of the transaction as successfully changed.
Display Equipment BOM
| Transaction code | IB03 |
| Menu path | SAP Easy Access –> Logistics –> Plant Maintenance –> Management of Technical Objects –> Bill of Material –> Equipment BOM –> Display |
In order to view an existing SAP PM bills of material for equipment without being able to modify it, follow the steps as described below.
On the initial screen of the transaction enter the equipment number, plant and BOM usage “4”. Next, press Enter button on the keyboard.
Create Functional Location BOM
| Transaction code | IB11 |
| Menu path | SAP Easy Access –> Logistics –> Plant Maintenance –> Management of Technical Objects –> Bill of Material –> Functional Location BOM –> Create |
Start the transaction and the initial screen will be displayed as shown below. Enter the Functional Location number for which BOM to be created, Plant code and choose BOM Usage from the list (“4”).
Press Enter button on the keyboard. We will be guided to the next screen for entering information about components of BOM.
Enter the required components along with their quantities and unit of measures. Then, click Save button. We will receive a confirmation about creation of the functional location BOM.
Change Functional Location BOM
| Transaction code | IB12 |
| Menu path | SAP Easy Access –> Logistics –> Plant Maintenance –> Management of Technical Objects –> Bill of Material –> Functional Location BOM –> Change |
If we need to make changes for an existing functional location BOM, we should follow the steps as described below. Similarly, as we did before, enter the information to identify the BOM to edit including functional location number, plant, and BOM usage.
Next, click Enter button on the keyboard and the system will take you to the next screen.
Then, make the required changes and click Save button.
Display Functional Location BOM
| Transaction code | IB13 |
| Menu path | SAP Easy Access –> Logistics –> Plant Maintenance –> Management of Technical Objects –> Bill of Material –> Functional Location BOM –> Display |
Finally, let’s see how to open a functional location BOM in a display mode. Start the transaction IB13 and enter the required information on the initial screen (functional location, plant, and BOM usage).
Next, press Enter button on the keyboard. The SAP system will show the components that are included in this bill of materials.
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Did you like this tutorial? Have any questions or comments? We would love to hear your feedback in the comments section below. It’d be a big help for us, and hopefully it’s something we can address for you in improvement of our free SAP PM tutorials.
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View Comments (12)
Grade work.I am very happy about your job.
Changing equipment BOM Its Asking Change Number Where I can get that number ?
No need to enter change number, Just press enter
When entering in the equipment number on the bom (where it says component) is this the same equipment number used when creating an equipment in IE01? or is it a different t-code?
Thanks
Thanks. If have many plant equipments that use the same spare part materials. Should I manually create each BOM? It seems to me that there may be a way to assing one BOM to multiple equipment so when changes are made in that BOM (i.e. updating or increasing the spare part list for that type of equipment) it is updated in all equipments. Otherwise is not worth all the effort, that data will be hard to maintain
Component is an material si you have to create on MM01
Can you explain about Material BOM
Enter the components in equipment and functional BOM can we entered the Same components both places it's k or not
It would be good to continue with a Material BOM for a component of the Computer
The Functional Location BOM I assume a good example could be flourescent lamps installed in a room rather than the example showing Gears that I would have thought would be under a Equipment BOM.
But a very good article with good screen shots. I am a not SAP user, but interested in set up related to spares
Agreed on comments, I am curious about rebuilt stockroom parts... can I create a material BOM for stockroom items that reference the rebuild kit / core / etc. that would be available when creating order in IW81 for orders against material. Having that auto populate can ease rebuild tasks if they know what kits / supplies / materials they would need to complete the rebuild.
OK, found your other guide: https://erproof.com/pp/sap-pp-training/sap-bill-of-materials/
It says that the CS01 tcode is for production planning, I used to create a BOM for use 4 - Plant Maintenance and it shows input materials as twisty next to structure list to open up and see feeder materials under the equipment BOM, as well they show in the "Component > List" that you open in an IW81 fabrication / refurbishment order. Issue we have is role assignment / access as TCode IW81 is restricted us to production planning currently, so we can only do / have access in our test environment.
FYI.
Can you change the title of an assemble once it is created?