Hope this might be helpful:
No, you do not need to manually aggregate total quantities per item or level before loading a Bill of Materials (BOM) into Business Central.
Business Central's standard BOM explosion logic is designed to automatically:
- Aggregate quantities for the same component across different lines at the same BOM level.
- Recursively aggregate quantities of components used in sub-assemblies (multi-level BOMs) into the top-level production order component list.
Your observation of triplicated quantities during BOM explosion and Production Order creation indicates a setup error in your BOMs, where the component is likely listed multiple times with its individual quantity instead of a single line with the aggregated quantity at each specific BOM level.
Example: If an item requires 3 screws, the BOM line for "screws" should be Quantity = 3, not 3 separate lines each with Quantity = 1. If a sub-assembly uses a component, and that sub-assembly is used multiple times, the system will correctly sum up the component usage.
Action: Review and correct the structure of your BOMs to ensure each component is listed only once per parent item, with its total required quantity at that level.
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