Made on Assembly (MOA)
Design your mBOM to build multiple levels of an assembly on the same work instructions.
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Design your mBOM to build multiple levels of an assembly on the same work instructions.
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Made on Assembly is a useful tool for the cases where a single procedure will always build two or more levels of an mBOM. Consider the mBOM below:
If based on the workflow, part B is built in the process of building part A, and there is no need to inventory part B separately, it might make sense to set part B to MOA. The information below will show how Made on Assembly is handled across ION and help you decide which parts should be designated as MOA.
Here are some other notes on MOA:
Where can MOA be set?: toggle MOA on the mBOM via the part library
How can the grandchildren parts be installed?: multiple levels of the aBOM can be accessed via the aBOM manager on a run
How are MOA inventories generated?: part inventories are autogenerated for the MOA part when the aBOM is created (if serial-tracked, serial number is autogenerated, otherwise will autogenerate a lot number)
Defining as assembly as Made on Assembly will allow you to build the aBOM for that assembly while building the parent.
In the example below the wheel assembly has been set to be MOA in the mBOM.
The expanded mBOM for the car assembly looks like this:
When a run is created for the car assembly (part number 12345-01-01) and the aBOM is opened, you'll notice 2 things:
An inventory item has been created with an auto-generated lot number for the Made on Assembly (MOA) part.
You can install the children for the wheel the assembly. This allows you to build multiple levels of the aBOM in one process!
From here, you can proceed to install components as usual.
When kitting an assembly that has MOA assemblies, MOA parts are not included in the kit, but their children are.
This kit was generated from the same mBOM as above. Notice how the wheel assembly is not an item, but the tire and wheel hub parts are.
The reason that we construct multiple levels of the aBOM for MOA parts is so that you can remove MOA assemblies easily.
For instance, in the example above, if you were to remove the wheel assembly later on after it had been built, its children would also come with it. If we were to flatten the BOM to include the children parts, you would have to remove each child part (tire and wheel hub) individually.
In Autoplan, Made on Assembly components will be marked as Placeholder within the plan results. Placeholder items cannot be converted directly into runs/purchases. They are purely there to fully represent the hierarchy of the BOM, but they should not be actioned themselves.
