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Microsoft MB-500 Exam - Topic 4 Question 119 Discussion

You are developing a customization for Dynamics 365 Finance.The customization must extend objects from the Application Foundation package.You need to create and configure a new model for the customization.Which two actions should you perform? Each correct answer presents part of the solution.NOTE: Each correct selection is worth one point.
A) Create a new model that builds into its own separate assembly. and E) Create an extension class that references the Application Foundation.
B) Reference the Application Foundation package when creating the extension model.
C) Create a new model that is part of an existing package.
D) Assign the model to the USR layer.

Microsoft MB-500 Exam - Topic 4 Question 119 Discussion

Actual exam question for Microsoft's MB-500 exam
Question #: 119
Topic #: 4
[All MB-500 Questions]

You are developing a customization for Dynamics 365 Finance.

The customization must extend objects from the Application Foundation package.

You need to create and configure a new model for the customization.

Which two actions should you perform? Each correct answer presents part of the solution.

NOTE: Each correct selection is worth one point.

Show Suggested Answer Hide Answer
Suggested Answer: A, E

https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/extensibility/class-extensions

https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/dev-tools/model-split

by Leatha at May 12, 2026, 01:38 PM

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Shayne
4 days ago
C seems risky. Why mix with existing packages?
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Vinnie
9 days ago
I’m leaning towards B and D. USR layer is important for customization.
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Ceola
14 days ago
A makes sense too. Separate assembly is a good practice.
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Marcelle
19 days ago
I think B is essential. You need that reference.
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Armanda
25 days ago
C seems risky, better stick with A for stability.
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Abel
30 days ago
Totally agree with B, it's essential for the extension model!
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Abel
1 month ago
Wait, can you really assign a model to the USR layer? Sounds odd.
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Charlette
1 month ago
I think A is a better choice than C.
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Amber
2 months ago
B and D are definitely the right moves!
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Millie
2 months ago
A and B seem like the best choices here!
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Tawna
2 months ago
I disagree, C doesn't make sense for this scenario.
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Blair
2 months ago
Wait, can you really reference the Application Foundation like that?
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Amira
2 months ago
I think A is also a good option.
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Ammie
2 months ago
B and D are definitely the right moves.
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Juliana
3 months ago
I’m a bit confused about whether to create a new model as part of an existing package or as a separate one. I need to think that through more.
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Jina
3 months ago
I feel like we practiced a question similar to this where we had to assign models to layers. Assigning it to the USR layer could be important too.
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Amie
3 months ago
I’m not entirely sure, but I think creating a new model that builds into its own assembly might be necessary for proper customization.
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Xochitl
4 months ago
I remember we discussed the importance of referencing the Application Foundation package when creating extension models. That seems like a key step.
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