Create and edit virtual entities that contain data from an external data source

Applies to Dynamics 365 (online), version 9.x

A virtual entity is a custom entity in Dynamics 365 that has fields containing data from an external data source. Virtual entities appear in Dynamics 365 to users as regular Dynamics 365 entity records, but contain data that is sourced from an external database, such as an Azure SQL Database. Records based on virtual entities are available in all Dynamics 365 clients including custom clients developed using the Dynamics 365 Customer Engagement Web Services.

In the past, to integrate the disparate data sources you would need to create a connector to move data or develop a custom plug-in, either client or server-side. However, with virtual entities you can connect directly with an external data source at runtime so that specific data from the external data source is available in Dynamics 365, without the need for data replication.

Virtual entities are made up of three main components, a data provider, a data source record, and a virtual entity. The data provider consists of plug-ins and a data source entity. The data source is an entity record in Dynamics 365, which includes metadata that represents the schema of the connection parameters. Each virtual entity references a data source in the entity definition.

Dynamics 365 includes an OData Data Provider that you can use to connect with an OData v4 web service that accesses the external data.

Alternatively, developers can build their own data providers. Data providers are installed in Dynamics 365 as a solution. More information: Get started with virtual entities

Virtual entity diagram

Virtual entity benefits

  • Developers can implement plugins to read external data using the Dynamics 365 Customer Engagement Web Services and Dynamics 365 Plug-in Registration tool.

  • System customizers use the Dynamics 365 customer engagement app to configure the data source record and create virtual entities that are used to access external data without writing any code.

  • End users work with the records created by the virtual entity to view the data in fields, grids, search results, and Fetch XML-based reports and dashboards.

Add a data source to use for virtual entities

Developers create a custom plug-in to use as the data provider for a virtual entity. Alternatively, you can use the provided OData v4 Data Provider. More information: OData v4 Data Provider configuration, requirements, and best practices

  1. Go to Settings > Administration > Virtual Entity Data Sources.

  2. On the actions toolbar, click New.

  3. On the Select Data Provider dialog box, select from the following data sources, and then click OK.

Add a secured field to a Data Source

You create fields for a Data Source in the same way as any other entity. For data that is encrypted or sensitive, enable the Data Source Secret attribute on the custom field of the Data Source. For example, to secure a field that contains a database connection string.


The Data Source Secret attribute is only available with fields added to a Data Source form.

Data source secret attribute

Create a virtual entity

You create a virtual entity just like any other entity in Dynamics 365 with the addition of a few extra attributes described here.


Although you can create a virtual entity by selecting None as the data source, to acquire data a virtual entity requires a data source. More information: Add a data source to use for virtual entities

  1. Go to Settings > Customizations > Customize the System.

  2. In the solution explorer, create a new entity. To do this, click Entities in the left navigation pane, and then click New.

  3. On the General tab of the Entity Definition, click Virtual Entity, and then in the Data Source drop down list, select the data source that you want.

    Virtual Entity option on entity definition

  4. On the Entity Definition, complete the following required fields.

    • External Name. Enter the name of the table in the external data source this entity maps to.

    • External Collection Name. Enter the plural name of the table in the external data source this entity maps to.

      Here's an example of a virtual entity named Movie that uses a Azure Cosmos DB data provider to access document files.

    Virtual entity definition using the Azure Cosmos DB data provider


    Several options, such as Access Teams, Queues, and Quick Create, aren't available with virtual entities. More information: Considerations when you use virtual entities

    Complete the additional required and optional properties, such as display and plural names, as necessary. For more information about these properties, see Create and edit entities.

  5. Create and add one or more fields for the virtual entity. In addition to the standard field properties required to create a custom field, these optional properties are available for each custom field you create for a virtual entity.

    • External Name. This is typically the unique name to identify the data you want to display in the field.


    If the field type you create is OptionSet, the following additional fields are available.

    • External Type Name. This property maps to the external name of the set of values in the external service for the option set. Typically, this can be an enum or name of a string value class. The External Type Name can be used when a fully qualified name is required. For example, as the Type Name with OData where parameters in a query need the fully qualified name, such as [Type Name].[Value].
    • External Value. This property maps to the corresponding value in the external data source for the option set item. This value entered is used to determine which option set item to display in Dynamics 365.

    Complete the additional properties as necessary. For more information about these properties, see Create and edit fields.

  6. Click Save and Close on the Field properties page.

  7. On the solution explorer toolbar, click Save.

  8. On the solution explorer toolbar, click Publish.

  9. Close solution explorer.

Considerations when you use virtual entities

Virtual entities have these restrictions.

  • All virtual entitites are read-only.

  • Existing entities cannot be converted to virtual entities.

  • Virtual entities don't support auditing.

  • Virtual entity fields can't be used in rollups or calculated fields.

  • A virtual entity can't be an activity type of entity.

  • Many features that affect entity table rows cannot be enabled with virtual entities. Examples include queues, knowledge management, SLAs, duplicate detection, change tracking, mobile offline capability, field security, Relevance Search, Portals for Dynamics 365 web portal solutions, and N:N relationships.

  • Virtual entities are organization owned and don't support the row-level Dynamics 365 security concepts. We recommend that you implement your own security model for the external data source.

  • We recommend that you target a single data source when you use virtual entities in Advanced Finds. For example, we don't recommend you create an Advanced Find that ultimately creates a join between Dynamics 365 native data and the virtual entity external data.

  • Field metadata properties that validate on update don’t apply to virtual entities. For example, a Whole Number field on a virtual entity field may be set to have a minimum value of zero. However, since the value is coming from an external data source, a query will return values less than zero when retrieved from a virtual entity. The minimum value property is not implied in the query. You would still need to filter the values to be greater than 0 if that’s what is desired.

  • Virtual entities don't support change tracking and cannot be synchronized by using a Dynamics 365 feature, such as the Data Export Service.

See also

OData v4 Data Provider requirements and best practices
Create and edit entities
Create and edit fields