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Dynamics 365 Community / Forums / Finance | Project Operations, Human Resources, ... / Struggling to fetch Da...
Finance | Project Operations, Human Resources, ...
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Struggling to fetch Data Entity Extensions in D365 F&O — MetadataSupport limitations?

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Posted on by SJ-09041325-0 2

Objective:
Build a job that takes a Data Entity name as input and returns all its extensions present in the system.

What I’ve tried so far:

  • Explored MetadataSupport class thoroughly (via Microsoft Learn and runtime inspection)

  • Methods like:

    • GetDataEntityViewNames()

    • GetDataEntityView()

    • GetDataEntity()

  • These only return base entities, not extensions

Problem:
There doesn’t seem to be any public MetadataSupport method that exposes Data Entity Extensions, unlike:

  • Tables → GetTableExtensionsForTable()

  • Data Entities → No equivalent

Observations:

  • In AOT, extensions are visible under Data Entity Extensions (e.g. Entity.ExtensionName)

  • But this structure is not exposed via MetadataSupport APIs

  • Naming-based approaches are unreliable and not suitable for production-grade tools

Screenshot 2026-04-09 190311.png
Categories:
Dynamics 365 Finance
I have the same question (0)
  • Martin Dráb Profile Picture
    Martin Dráb 239,643 Most Valuable Professional on at
    Moved from Integration, Dataverse, and general topics forum to Finance | Project Operations, Human Resources, AX, GP, SL forum.
     
    The MetadataSupport class is a simplified interface of the metadata API and it doesn't expose all the features. You may want to use the metadata API directly rather than going through MetadataSupport. Providers there have DataEntityViewExtensions property that you seem to be looking for.
     
    Your code snippet suggests that you've already tried to do so, but you didn't mention it in text at all. I see you're getting a compilation error. I suspect (but I'm not sure) that there is no MetadataProvider class. If you meant IMetadataProvider interface, you need to fix the name and add a using statement for Microsoft.Dynamics.AX.Metadata.Storage.Providers.

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