49 lines
2.3 KiB
Markdown
49 lines
2.3 KiB
Markdown
# Bill Of Materials
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At the heart of the Manufacturing system is the **Bill of Materials** (BOM).
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The **BOM** is a list of all materials (either bought or made) and operations
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that go into a finished product or sub-Item. In ERPNext, the component could
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have its own BOM hence forming a tree of Items with multiple levels.
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To make accurate Purchase Requests, you must always maintain correct BOMs.
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To make a new BOM:
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> Manufacturing > Bill of Materials > New BOM
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<img class="screenshot" alt="Task" src="/docs/assets/img/manufacturing/bom.png">
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* To add Operations select 'With Operation'. The Operations table shall appear.
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<img class="screenshot" alt="Task" src="/docs/assets/img/manufacturing/bom-operations.png">
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* Select the Item for which you want to make the BOM.
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* Add the operations that you have to go through to make that particular Item in the “Operations” table. For each operation, you will be asked to enter a Workstation. You must create new Workstations as and when necessary.
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* Workstations are defined only for product costing and Production Order Operations scheduling purposes not inventory.
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* Inventory is tracked in Warehouses not Workstations.
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###Costing of a BOM
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* The Costing section in BOM gives an approximate cost of producing the Item.
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* Add the list of Items you require for each operation, with its quantity. This Item could be a purchased Item or a sub-assembly with its own BOM. If the row Item is a manufactured Item and has multiple BOMs, select the appropriate BOM. You can also define if a part of the Item goes into scrap.
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<img class="screenshot" alt="Costing" src="/docs/assets/img/manufacturing/bom-costing.png">
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* This cost can be updated on by using the 'Update Cost' button.
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<img class="screenshot" alt="Update Cost" src="/docs/assets/img/manufacturing/bom-update-cost.png">
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* User can select the currency in the BOM
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* System calculates the costing based on the price list currency
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<img class="screenshot" alt="Update Cost" src="/docs/assets/img/manufacturing/price-list-based-currency-bom.png">
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### Materials Required(exploded)
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This table lists down all the Material required for the Item to be Manufactured.
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It also fetches sub-assemblies along with the quantity.
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<img class="screenshot" alt="Exploded Section" src="/docs/assets/img/manufacturing/bom-exploded.png">
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{next}
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