Data Entity Creation where does the Margin field live?

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Posted on by Michael Hutcheson

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OHello,

In D365 F and O I wish to create a Data Entity. I know how to do this, but I specifically require the Margin field within the Invoice Journal screen.

I went into the Form Information screen and can see the Control Name is 'Contribution Margin' and the Data Source is 'CustInvoiceTrans', however, if perform a SQL lookup in this table, there is no ''Contribution Margin' field.

Where does the Margin field live or is it calculated on-the-fly? If so what is the calculation?

Thank you,

Michael

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Layan Jwei 8,271 Super User 2026 Season 1 on at

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Hi Michael,

This margin field is a display method in CustInvoiceTrans table. In order to add it to the entity, you will need to use computed columns or virtual fields.

You can check this link for more details:
https://learn.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/data-entities/data-entity-computed-columns-virtual-fields

So you need to look at the logic of this display method, if you can write it in T-SQL then use computed columns. If not then use virtual fields. With virtual fields you can use x++ coding and call the display method but virtual fields cause performance issues that's why we prefer to use computed columns if it's possible to use them

Thanks,
Layan Jweihan
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Michael Hutcheson 131 on at

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Hi,

Thanks for that, that is a big help.

Is the actual calculation for the Margin field stored anywhere? I can write T-SQL but how do I know what to replicate?

Regards,

Michael

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Layan Jwei 8,271 Super User 2026 Season 1 on at

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Hi,

I don't think it's stored anywhere since it requires calculation. I just looked at the method and it seems very complex, I don't think computed column would work, you can look at the code inside the display method. So it seems you will need to go with the virtual field -- and you can see how the performance of the entity will be affected (I mean if it's ok with you or not)

Thanks,
Layan Jweihan
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Layan Jwei 8,271 Super User 2026 Season 1 on at

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Hi,

Is your issue question answered? if yes, then please verify the answers that helped.

Thanks,
Layan Jweihan

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Michael Hutcheson 131 on at

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Hi all,

I found what I was looking for - it is this Entity:

Entity: Pending and active item prices V3
Staging Table: InventItemPriceV3Staging
Target Entity: InventItemPriceV3Entity

There is a column within the Entity called [AVERAGEUNITCOST] - this is the cost used to calculated the Margin for Invoiced Order Lines.

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Layan Jwei 8,271 Super User 2026 Season 1 on at

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Hi Michael,

There is no such field, could it be a customized field?

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