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Business rule with lookup

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Posted on by Tango

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Hi,

Is it possible in a business rule o do a lookup?

Consider quote line table with a column that is a lookup to a separate product table that has unit price based on different quantities.

when quantity is entered on the line item table, want to go get the unit price based on quantity.

Would also like this to be instant

Thanks in advance

Todd

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Microsoft Dataverse with Power Apps

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JonDoesFlow 1,304 on at

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This might help

https://powerusers.microsoft.com/t5/Building-Power-Apps/Using-Lookups-in-Model-Driven-App-Business-Rules/td-p/2285849

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Drew Poggemann 9,287 Most Valuable Professional on at

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Hi @Tango

Business rules relate to only a single table. You will not be able to look at fields on a related table within a Business Rule.

Note, you can pull in values (depending on what you are trying to do) in PowerFX formula columns (https://learn.microsoft.com/en-us/power-apps/maker/data-platform/formula-columns?tabs=type-or-paste)

Challenge with PowerFX formulas is that they do not support currency directly and if pulling from a remote tables doesn't support (even with casting as Decimal), see below (I know these are different fields than what you are trying to do but you can see that I am relating a field in current table and a field from related table (through lookup column):

Another thing you could try is a calculated column. Example is you could do a calculated field that would be something like the following which works in my demo case:
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11manish 4,664 Super User 2026 Season 2 on at

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No, you cannot perform a lookup in a Business Rule in Microsoft Dataverse / Dynamics 365.

Use:

JavaScript → instant result

Plugin → backend consistency