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Assembly Output has no cost value

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Posted on by Martin Booth

Hi,

Can you please help. We have posted an number of Assembly Orders where the posted output doesn't have a Unit Cost. Does Has anyone seen this issue before?

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Dynamics 365 Business Central

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Pallavi Phade 4,124 on at

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Dear Martin

In Business Central, when you post an Assembly Order, the Unit Cost of the output item is derived from the total cost of its assembled components (i.e., items and resources consumed during assembly).

However, if the Unit Cost is missing or shows as zero after posting the Assembly Output, it is likely because the "Adjust Cost - Item Entries" batch job has not been run yet.

This batch job updates item costs and ensures that the cost of the output reflects the correct component costs. Until it is executed, the unit cost on the output item may not be calculated or updated properly.

Recommendation:

Run the "Adjust Cost - Item Entries" batch job to ensure that the costs flow through correctly and the Unit Cost of the assembled item is accurately reflected.

Also, verify the Unit Cost of the component items.

Regards
Pallavi Phade

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Ramesh Kumar 7,529 Super User 2025 Season 2 on at

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You need to review the setup. I would just with item entries

https://learn.microsoft.com/en-us/dynamics365/business-central/design-details-assembly-order-posting?utm

https://erpsoftwareblog.com/2025/01/how-to-optimize-your-assembly-order-process-by-leveraging-the-warehouse-insight-app/?utm

Thanks

Ramesh

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Sohail Ahmed 11,150 Super User 2025 Season 2 on at

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Yes, this issue can occur if one or more of the following apply:

The components in the Assembly BOM have zero cost, or their costs weren’t updated properly before posting.

The Assembly Order was posted before the Inventory Costing or Cost Adjustment batch job was run.

There is a missing or incorrect cost on the item card of the assembly item, especially if it’s set to Standard Cost but the standard cost isn't defined.

Try running the "Adjust Cost - Item Entries" batch job and then recalculate inventory value. Also, make sure all component items have correct cost and are properly posted in inventory.

If helpful, please mark as verified ✅

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Gerardo Rentería Ga... 25,236 Most Valuable Professional on at

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Hi, good day
I hope this can help you, and give you some hints.

Breaking Down COGS into Material, Labor, & Overhead in Dynamics 365 Business Central - Dynamics 365 Business Central Insights

Best Regards
Gerardo

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YUN ZHU 95,729 Super User 2025 Season 2 on at

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Hi, hope the following helps as well.

https://learn.microsoft.com/en-us/dynamics365/business-central/design-details-accounts-in-the-general-ledger#assembly-costs-are-always-actual

https://learn.microsoft.com/en-us/dynamics365/business-central/design-details-assembly-order-posting#cost-adjustment

Thanks.

ZHU

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RockwithNav 8,637 Super User 2025 Season 2 on at

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This quite unusual though, Can you try posting one out in Cronus and see?

System calculates the unit cost based on expected and is very simple for Assembly as compared to that of Prodcution.

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Mansi Soni 8,909 Super User 2025 Season 2 on at

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Hello,

Hope this will help you as well to understand how system is considering cost and cost adjustment.

https://learn.microsoft.com/en-us/dynamics365/business-central/design-details-cost-adjustment

Regards,
Mansi Soni

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